# Last edited on 2023-01-19 00:27:45 by stolfi

# Legend and credits for texture samples
# See notes at end of file

| File     | Image contents                          | T | Source/credits
+----------+-----------------------------------------+---+---------------------
| anemo-01 | palpi from dense anemone field                              | i | [  ]           
| balls-70 | steel balls, 0.5 mm                                         | g | [JS]           
| barks-01 | tree bark, grainy                                           | p | [JS]           
| barks-02 | tree bark, corky                                            | p | [JS]           
| barks-03 | bark of guapuruvu tree                                      | g | [JS]           
| barks-81 | bark of Roman pine tree                                     | g | [JS]           
| beans-71 | black beans                                                 | g | [JS]           
| belly-01 | belly of ladybug larva                                      | m | [RR]           
| berry-01 | berries from bush near ifgw-unicamp                         | g | [JS]           
| bikes-01 | bikes parked at kyoto univ                                  | g | [JS]           
| bluej-01 | bluejay                                                     | w | [GG]           
| branx-71 | gray branches of tree at UFF                                | g | [JS]           
| brick-01 | ceramic brick wall of IFI-Unicamp                           | p | [JS]           
| brick-81 | ceramic tiles on wall of Berlin park                        | g | [JS]           
| brick-82 | end-grain wood wall tiles at Berlin museum                  | g | [JS]           
| brick-83 | ancient Roman brick wall                                    | g | [JS]           
| brick-84 | pavement of squarish granite blocks                         | g | [JS]           
| bubbl-01 | bubbles floating on water                                   | m | [SN]           
| bugeg-01 | ladybug eggs and larvae                                     | m | [RR]           
| bumps-81 | tile with bumps for visually impaired                       | g | [JS]           
| chalk-81 | colored chalk stumps, CU                                    | g | [JS]           
| chalk-82 | colored chalk stumps, WF                                    | g | [JS]           
| claws-01 | crab claw                                                   | m | [RR]           
| cloth-01 | cloth from mousepad                                         | d | [JS]           
| cloth-81 | rough carpet at Berlin hotel, CU                            | g | [JS]           
| cloth-82 | rough carpet at Berlin hotel, WF                            | g | [JS]           
| cloth-83 | coarse red-yellow tablecloth, CU                            | g | [JS]           
| cloth-84 | coarse red-yellow tablecloth, WF                            | g | [JS]           
| cloth-85 | coarse cloth of gray plastic strips, CU                     | g | [JS]           
| cloth-86 | coarse cloth of gray plastic strips, WF                     | g | [JS]           
| cloth-87 | coarse black and white cloth                                | g | [JS]           
| cloth-88 | coarse ligh and dark tan cloth                              | g | [JS]           
| cloud-01 | clouds at Unicamp, medium                                   | p | [JS]           
| cloud-02 | clouds at Unicamp, darkish                                  | p | [JS]           
| cloud-03 | clouds at Unicamp, light                                    | p | [JS]           
| cloud-81 | clouds from airplane window                                 | g | [JS]           
| coral-01 | brain coral                                                 | m | [CR]           
| coral-02 | coral polyps                                                | m | [CR]           
| coral-03 | crinoid coral                                               | m | [CR]           
| coral-04 | lattice coral                                               | m | [CR]           
| coral-05 | coral with closed polyps                                    | m | [CR]           
| crabs-01 | spiny crab claw                                             | m | [RR]           
| crabs-02 | spiny crab claw                                             | m | [RR]           
| crabs-03 | mottled crab shell                                          | m | [RR]           
| crack-01 | cracked ice on the Neva                                     | p | [JS]           
| decor-81 | heavily decorated church facade                             | g | [JS]           
| decor-82 | heavily decorated church facade                             | g | [JS]           
| deers-01 | group of deer                                               | m | [RR]           
| dirty-01 | loose red dirt                                              | p | [JS]           
| dirty-81 | irregular light tan clay surface                            | g | [JS]           
| eagle-01 | eagles on tree                                              | m | [RR]           
| fallf-81 | fallen red and brown berries on dirt                        | g | [JS]           
| falls-01 | fallen white flowers (few) on brown pavement                | g | [JS]           
| falls-02 | fallen white flowers on brown pavement                      | d | [JS]           
| falls-81 | fallen white ipe flowers on brown pavement                  | g | [JS]           
| falls-82 | fallen white flowers on brown pavement, CU                  | g | [JS]           
| falls-83 | fallen white flowers on brown pavement, WF                  | g | [JS]           
| falls-84 | fallen yellow ipe flowers on brown pavement                 | g | [JS]           
| falls-85 | fallen golden yello flowers, dense                          | g | [JS]           
| falls-86 | fallen scattered small yellow leaves on brown pavement, CU  | g | [JS]           
| falls-87 | fallen scattered small yellow leaves on brown pavement, WF  | g | [JS]           
| falls-88 | fallen green and tan leaves, dense                          | g | [JS]           
| falls-89 | fallen green and brownish leaves, dense                     | g | [JS]           
| falls-90 | fallen deep pink flowers on tan pavement                    | g | [JS]           
| feath-01 | owl feathers                                                | m | [RR]           
| fiber-01 | weathered fiberglass from impa's roof                       | g | [JS]           
| fiber-02 | weathered fiberglass from impa's roof                       | g | [JS]           
| figfr-01 | wild figs                                                   | m | [RR]           
| finch-01 | finch                                                       | w | [GG]           
| fishy-01 | fish school, pink                                           | m | [CR]           
| fishy-02 | fish scales, red                                            | m | [CR]           
| fishy-03 | fish skin, circles/spots                                    | m | [CR]           
| fishy-04 | fish school, silver                                         | m | [CR]           
| fishy-05 | fish school, blue                                           | m | [CR]           
| fishy-06 | fish skin, rings                                            | m | [CR]           
| fishy-07 | fish skin, yellow stripes                                   | m | [CR]           
| fishy-08 | spiderfish skin                                             | m | [CR]           
| fishy-09 | silvery fish school                                         | i | [  ]           
| fishy-81 | biolum jellyfish with fine blue lines                       | i | [RW]           
| flowr-01 | yellow ype canopy in flower                                 | p | [JS]           
| flowr-03 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-12 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-81 | orange flowers and bosoms from mall, CU                     | g | [JS]           
| flowr-82 | orange flowers and bosoms from mall, WF                     | g | [JS]           
| flowr-83 | white flowers and bosoms from mall, CU                      | g | [JS]           
| flowr-84 | white flowers and bosoms from mall, WF                      | g | [JS]           
| flowr-85 | daisies in blook                                            | g | [JS]           
| foils-01 | crumpled candy foil, white                                  | d | [JS]           
| foils-02 | crumpled candy foil, red                                    | d | [JS]           
| frogs-03 | frog skin and eye                                           | m | [RR]           
| fruit-81 | bunch of bright solferino fruit on tree                     | g | [JS]           
| gecko-01 | gecko skin and eye                                          | m | [RR]           
| gecko-02 | gecko skin                                                  | m | [RR]           
| gizmo-01 | mechanical apparatus                                        | m |                
| gnuhd-01 | herd of gnus                                                | m | [RR]           
| gohan-71 | cooked sticky rice                                          | g | [JS]           
| gohan-72 | opaque raw rice                                             | g | [JS]           
| grafl-02 | fallen flower petals on cropped grass, WF                   | g | [JS]           
| grafl-11 | fallen flower petals on cropped grass, CU                   | g | [JS]           
| grant-81 | polished granite white, black, dark bege                    | g | [JS]           
| grant-82 | polished granite white, black specks                        | g | [JS]           
| grant-83 | polished granite white, small black specks                  | g | [JS]           
| grant-84 | polished stone dark bege, brown, white                      | g | [JS]           
| grant-85 | polished stone white, brown worms                           | g | [JS]           
| grant-86 | polished stone peach, dark orange, CU                       | g | [JS]           
| grant-87 | polished stone peach, dark orange, WF                       | g | [JS]           
| grant-88 | polished stone white, black geographic fractal lines        | g | [JS]           
| grant-89 | polished artificial stone white, black, brown               | g | [JS]           
| grant-90 | polished stone white, black fractal lines                   | g | [JS]           
| grant-91 | polished stone white, black irregular lines                 | g | [JS]           
| grape-01 | grape cluster                                               | m | [SN]           
| grass-01 | tall grass at Unicamp                                       | p | [JS]           
| grass-02 | close-cropped mostly dry grass                              | g | [JS]           
| grass-03 | fresh short grass from top                                  | g | [JS]           
| grass-04 | tall weedy grass from side                                  | g | [JS]           
| grass-07 | fresh not-so-short grass, oblique view                      | g | [JS]           
| grass-08 | fresh not-so-short grass, oblique view                      | g | [JS]           
| grass-09 | grass with small round leaves, WF                           | g | [JS]           
| grass-81 | grass with small round leaves, CU                           | g | [JS]           
| grave-01 | gravel in kyoto imperial garden                             | g | [JS]           
| grave-02 | gravel in kyoto imperial garden                             | g | [JS]           
| gravl-81 | granite gravel, partly smooth, light gray                   | g | [JS]           
| gravl-82 | granite gravel, partly smooth, light tan                    | g | [JS]           
| gravl-83 | pavement with salient tan and white gravel                  | g | [JS]           
| gravl-84 | granite gravel, partly smooth, light and dark gray          | g | [JS]           
| gravl-85 | wall cover of salient river pebbles, tan                    | g | [JS]           
| gravl-86 | granite gravel, partly smooth, light and dark gray          | g | [JS]           
| gravl-87 | gravel, sharpish, light tan                                 | g | [JS]           
| gravl-88 | gravel of river pebbles, white, tan, gray                   | g | [JS]           
| grill-81 | perforated concrete sunshade                                | g | [JS]           
| hairs-02 | animal hair                                                 | m | [RR]           
| hermi-01 | façade of Hermitage                                         | m | [JS]           
| hoppr-01 | grasshopper belly                                           | p | [SI]           
| house-01 | house in kyoto next to imperial garden                      | g | [JS]           
| husks-01 | rice husks, WF                                              | g | [JS]           
| husks-02 | rice husks, CU                                              | g | [JS]           
| hutsy-01 | islander's huts                                             | m | [CR]           
| india-81 | busy india facade with long bank lines                      | i | [IJ]           
| ipeam-01 | yellow ype flowers, CU                                      | p | [JS]           
| ipers-02 | pink ype canopy in flower                                   | g | [JS]           
| kingf-01 | kingfisher                                                  | w | [GG]           
| kingf-02 | kingfisher                                                  | w | [GG]           
| ladyb-01 | ladybug cluster                                             | m | [RR]           
| ladyb-02 | ladybug, red                                                | m | [RR]           
| ladyb-03 | ladybug, yellow                                             | m | [RR]           
| ladyb-04 | ladybug, red                                                | m | [RR]           
| ladys-01 | hibernating ladybugs                                        | m | [RR]           
| leafy-01 | tree leaves at Unicamp                                      | p | [JS]           
| leafy-02 | papaya leaves, oblique from below                           | g | [JS]           
| leafy-05 | tree canopy, medium leaves from side                        | g | [JS]           
| leafy-06 | tree canopy, palmate leaves from below                      | g | [JS]           
| leafy-07 | tree canopy, palmate leaves from below                      | g | [JS]           
| leafy-08 | fern-like guapurivu leaves                                  | g | [JS]           
| leafy-09 | mango canopy                                                | g | [JS]           
| leafy-12 | green leaves from top                                       | p | [JS]           
| leafy-14 | tree leaves from side                                       | p | [JS]           
| leafy-33 | bamboo leaves                                               | p | [JS]           
| leafy-71 | DUPLICATE OF leafy-14                                       | g | [JS]           
| leafy-72 | DUPLICATE OF leafy-12                                       | g | [JS]           
| leafy-75 | peanut grass leaves                                         | g | [JS]           
| leafy-77 | DUPLICATE OF thorn-01                                       | g | [JS]           
| leafy-81 | leaves with white veins from top, CU                        | g | [JS]           
| leafy-82 | leaves with white veins from top, WF                        | g | [JS]           
| leafy-83 | dark green olive-like leaves                                | g | [JS]           
| leafy-84 | light duster-feather leaves, CU                             | g | [JS]           
| leafy-85 | dark duster-feather leaves, CU                              | g | [JS]           
| leafy-86 | duster-feather leaves, WF                                   | g | [JS]           
| loons-01 | loon                                                        | w | [GG]           
| loons-02 | loon wing and breast                                        | m |                
| mango-01 | mango fruits caught on storm sever, WF                      | g | [JS]           
| mango-71 | mango fruits caught on storm sever, CU                      | g | [JS]           
| mingo-01 | flock of flamingos                                          | m | [RR]           
| morsa-01 | sea elephants sleeping                                      | m | [RR]           
| mosic-81 | irregular squarish cobblestone wall                         | g | [JS]           
| mosic-82 | glazed pastille floor, ligh and dark grey                   | g | [JS]           
| mosic-83 | ceramic unglazed hex pastille floor, mostly light tan       | g | [JS]           
| mosic-84 | pavement of fishbone interlocking concrete blocks           | g | [JS]           
| mosic-85 | glazed pastille floor, red, orange, white                   | g | [JS]           
| mosic-86 | glazed pastille floor, blues and greens, CU                 | g | [JS]           
| mosic-87 | glazed pastille floor, blues and greens, WF                 | g | [JS]           
| mosic-88 | polygonal "voronoi" stone wall, WF                          | g | [JS]           
| mosic-89 | pavement of rectangular granite blocks                      | g | [JS]           
| mosic-90 | pavement of scalloped concrete blocks                       | g | [JS]           
| mosic-91 | pavement of squarish granite blocks, scallop layout         | g | [JS]           
| mosic-92 | ancient mosaic black, white, red                            | g | [JS]           
| mosic-93 | semi-regular mosaic squarish pastilles, white, some black   | g | [JS]           
| mosic-94 | mosaic of small white chips and larger colored ones         | g | [JS]           
| mosic-95 | semi-regular mosaic squarish pastilles, white and light tan | g | [JS]           
| mosic-96 | floor mosaic of small white and black stones                | g | [JS]           
| mosic-97 | floor mosaic of large colored tile shards                   | g | [JS]           
| mosic-98 | polygonal "voronoi" stone wall, CU                          | g | [JS]           
| mosic-99 | floor mosaic of large patterned marble frags                | g | [JS]           
| mossy-81 | lichen and moss on tree trunk                               | g | [JS]           
| nails-01 | nails on door of kyoto imperial garden                      | g | [JS]           
| nails-02 | nails on door of kyoto imperial garden                      | g | [JS]           
| narch-01 | monarch butterflies                                         | m | [RR]           
| needs-01 | pine needles                                                | m | [RR]           
| newsp-01 | printing reticle                                            | m | [GG]           
| oncas-01 | leopard face                                                | m |                
| orchd-02 | orchid surface                                              | m | [RR]           
| parad-01 | paradise bird feathers                                      | m | [RR]           
| pards-01 | leopard spots                                               | m |                
| pcock-01 | peacock tail feathers                                       | m | [RR]           
| pebbl-71 | roundish pebbles gray, light tan                            | g | [JS]           
| pebbl-72 | roundish pebbles gray, light tan, CU                        | g | [JS]           
| pebbl-73 | roundish pebbles gray, light tan, WF                        | g | [JS]           
| pebbl-81 | lightly smoothed granite gravel, gray and tan               | g | [JS]           
| pebbl-82 | partly smoothed granite gravel, light tan, WF               | g | [JS]           
| pebbl-83 | partly smoothed granite gravel, light tan, CU               | g | [JS]           
| pebbl-84 | lighly smoothed quarzite gravel, tan                        | g | [JS]           
| pebbl-85 | partly smoothed granite gravel, light and dark grey         | g | [JS]           
| pebbl-86 | wall with salient river pebbles, CU                         | g | [JS]           
| pebbl-87 | partly smoothed granite gravel, CU                          | g | [JS]           
| pebbl-88 | large smoothed pebbles embedded in cement, CU               | g | [JS]           
| pebbl-89 | sharp stone gravel embedded in cement, CU                   | g | [JS]           
| pebbl-90 | smooth river pebbles, white, tan, grey, CU                  | g | [JS]           
| perli-00 | expanded clay pebbles from unicamp fountain, WF             | g | [RU]           
| perli-01 | expanded clay pebbles from unicamp fountain, CU             | g | [RU]           
| perli-81 | rough expanded clay pebbles, CU                             | g | [JS]           
| perli-82 | semi-smooth bland expanded clay pebbles, CU                 | g | [JS]           
| perli-83 | expanded clay pebbles, irregular size and color             | g | [JS]           
| peter-01 | façade at St. Petersburg                                    | p | [JS]           
| pines-01 | pine trees on steep slope                                   | m | [SN]           
| plaid-01 | plaid shirt                                                 | m | [RR]           
| plank-01 | plankton                                                    | m |                
| porcu-01 | porcupine quills and eye                                    | m | [RR]           
| puffs-01 | brush-spined fruits on leafy floor                          | g | [JS]           
| puffx-01 | puffer fish                                                 | m |                
| rebar-01 | tangled heap of used rebar                                  | g | [JS]           
| rebar-02 | tangled heap of used rebar                                  | g | [JS]           
| rebar-03 | tangled heap of used rebar                                  | g | [JS]           
| reefs-01 | coral reef                                                  | m | [CR]           
| rhino-01 | rhinoceros hide                                             | m | [RR]           
| rocks-01 | rock surface                                                | m |                
| rocks-81 | rocks of wave barrier, naples bay                           | g | [JS]           
| rocks-82 | rocks of wave barrier, naples bay                           | g | [JS]           
| roofs-01 | tile roof of temple in kyoto                                | g | [JS]           
| roots-81 | roots of climbing plant on mossy tree trunk                 | g | [JS]           
| sandy-01 | sand pile at Unicamp                                        | p | [JS]           
| slugs-01 | sea slug gills                                              | m | [CR]           
| smoke-01 | dense smoke                                                 | m | [SN]           
| smurf-01 | crowd of Smurfs                                             | w | [PY]           
| snake-03 | snake skin                                                  | m | [RR]           
| snake-04 | snake skin                                                  | m | [RR]           
| snakw-01 | tangle of garter snakes                                     | m | [RR]           
| sparw-02 | sparrow                                                     | w | [GG]           
| spweb-01 | spiderweb                                                   | p | [SI] ssilk1.gif
| sqirt-01 | sea squirts                                                 | m | [CR]           
| stone-01 | stone blocks from a wall in kyoto                           | g | [JS]           
| stork-01 | stork nest, CU                                              | m | [RR]           
| straw-01 | straw, CU                                                   | m | [RR]           
| tampi-81 | wall with bottle caps, painted yellow, CU                   | g | [JS]           
| tampi-82 | wall with bottle caps, painted yellow, WF                   | g | [JS]           
| tampi-83 | wall with bottle caps, CU                                   | g | [JS]           
| tampi-84 | wall with bottle caps, WF                                   | g | [JS]           
| tampi-85 | wall with bottle caps, rusted, WF                           | g | [JS]           
| tampi-86 | wall with bottle caps, half of them rusted, WF              | g | [JS]           
| taran-01 | tarantula on dark sand                                      | m | [RR]           
| tareg-01 | tarantula eggs and young                                    | m | [RR]           
| tarmc-71 | blue-colorized tarmac with grey specks                      | g | [JS]           
| tarmc-81 | concrete pavement, white and gray                           | g | [JS]           
| tarmc-82 | concrete pavement with dark bege embedded semismooth gravel | g | [JS]           
| tarmc-83 | concrete pavement with gray embedded semismooth gravel      | g | [JS]           
| tatos-01 | potatoes from peru                                          | p | [SI]           
| teeth-01 | tyrannosaur teeth and skin                                  | m | [SN]           
| tenta-01 | polip tentacles                                             | m | [CR]           
| thorn-01 | thorny palmate leaves                                       | g | [JS]           
| thorn-02 | thorny palmate leaves                                       | g | [JS]           
| thumb-01 | fingerprint of J. Stolfi                                    | d | [ID]           
| torto-01 | box turtle scales                                           | m | [RR]           
| trees-01 | winter trees at St. Petersburg, crown                       | p | [JS]           
| trees-02 | winter trees at St. Petersburg, whole                       | p | [JS]           
| trees-03 | winter tree branches at St. Petersburg                      | p | [JS]           
| trees-04 | island trees                                                | m | [CR]           
| trees-05 | tree canopy, small leaves, from side                        | g | [JS]           
| trees-06 | tree canopy, small leaves, from side                        | g | [JS]           
| trees-07 | tree canopy, small leaves, from side                        | g | [JS]           
| trees-08 | tree canopy, small leaves, from side                        | g | [JS]           
| trees-09 | tree canopy, medium leaves, from side                       | g | [JS]           
| trees-12 | tree canopy, medium leaves from side                        | p | [JS]           
| trees-71 | DUPLICATE OF leafy-09?                                      | g | [JS]           
| trick-01 | science toy advertisement                                   | k | [SN]           
| truss-01 | truss at Ouro Verde bldg.                                   | p | [JS]           
| waldo-01 | crowd of Waldos                                             | w | [WW]           
| warts-01 | warts around bird's eye                                     | m | [RR]           
| water-01 | water pond in kyoto imperial garden                         | g | [JS]           
| waves-01 | wavy pond surface                                           | p | [JS]           
| wavys-00 | synthetic wave, ~2 px period                                | s | [JS]           
| wavys-03 | synthetic grain, semiregular, ~2px period                   | s | [JS]           
| wavys-09 | synthetic grain, irregular, ~2px period                     | s | [JS]           
| wavys-11 | synthetic wave, ~2.1 px period                              | s | [JS]           
| wavys-22 | synthetic wave, ~2.2 px period                              | s | [JS]           
| wavys-33 | synthetic wave, ~2.3 px period                              | s | [JS]           
| wavys-44 | synthetic wave, ~2.4 px period                              | s | [JS]           
| wavys-55 | synthetic wave, ~2.5 px period                              | s | [JS]           
| wavys-66 | synthetic wave, ~2.7 px period                              | s | [JS]           
| wavys-77 | synthetic wave, ~2.9 px period                              | s | [JS]           
| wavys-88 | synthetic wave, ~3.0 px period                              | s | [JS]           
| wavys-99 | synthetic wave, ~3.2 px period                              | s | [JS]           
| weeds-01 | weeds in river bank, kyoto                                  | g | [JS]           
| weeds-02 | weeds in river bank, kyoto                                  | g | [JS]           
| wetcr-71 | wet concrete pavement with salient black gravel             | g | [JS]           
| wheat-81 | wheat berries                                               | i | [UN]           
| woody-81 | end-grain wood tiles, berlin museum                         | g | [JS]           
| xrpei-01 | skin folds of "xarpei" breed dog                            | m | [RR]           

# Discarded:

| dirty-02 | loose red dirt                                              | p | [JS]           
| flowr-02 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-04 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-05 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-11 | fallen flower petals on cement floor                        | g | [JS]           
| flowr-13 | fallen flower petals on cement floor                        | g | [JS]           
| grafl-01 | fallen flower petals on cropped grass                       | g | [JS]           
| ipers-01 | pink ype canopy in flower                                   | g | [JS]           
| ipers-03 | pink ype canopy in flower                                   | g | [JS]           
| joshu-01 | joshua tree canopy                                          | p | [JS]           
| leafy-03 | tree canopy, medium leaves from side                        | g | [JS]           
| paina-01 | paineira wth ripe fruits                                    | p | [JS]           
| spiny-01 | spiny paineira bark                                         | p | [JS]           
| trees-10 | tree canopy with yellow flowers                             | p | [JS]           
| trees-11 | tree canopy, small leaves from side                         | p | [JS]           
| trees-13 | tree canopy, medium leaves from side                        | p | [JS]           

# Abbreviations in description:
#
#    CU = clos-up (relatively)
#    WF = wide field (relatively)
# 
#  Codes used in "Image type" (T) column:
# 
#    d = sample material scanned directly
#    g = digital photograph
#    p = photograph, scanned directly
#    m = photograph, scanned from printed book or magazine
#    k = solid black line drawing or text, scanned from printed magazine
#    w = watercolor and ink painting, scanned from printed book or magazine
#    i = image from internet
#    s = synthetic image
#
#  Abbreviations used in "Source/credits" column:
# 
#    [RR] = "Ranger Rick", a nature magazine for children.
#    
#    [GG] = "American Birds", a "Golden Guide" pocket book.
#    
#    [SI] = "Smithshonian Institution Photo Archive".
#    
#    [SN] = "Science News".
#    
#    [CR] = "Coral Reefs", a book by ???
#
#    [RW] = Ralf Wagner, ???
#
#    [JS] = Jorge Stolfi.
#    
#    [ID] = Police-issued personal ID card
#
#    [WW] = Martin Hanford's "Where is Waldo" book series.
#
#    [PY] = "Smurfs" comic book by Peyo.
#
#    [IJ] = Some Indian news website.
#
#    [UN] = Unknown website.
#
# Except for the [SI] material, scanning was done by J. Stolfi with a
# flatbed scanner, at various resolutions up to 600 dpi (nominal).
# 
# Most images have been scaled down after scanning.
# They have also been gamma-corrected and contrast-adjusted
# in various ways.