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Small white Lady's Slippers on the Fort Snelling prairie
Small yellow Lady's Slipper
Small yellow Lady's Slipper
Snakebird, illustration from Alfred Newton, "A Dictionary of Birds"
Snake nomenclature, scalation, illustration
Snapping turtle
Snapping Turtle with a 10 inch shell
Snow along the shoreline of Lake Superior
Snow along the shoreline of Lake Superior
Snow Buntings, Lake Superior, North Shore
Snow cover after a snowstorm
Snow Goose, goose on nest covering eggs, gander standing guard, H.J. Jaeger's flock
Snow Goose, H.J. Jaeger's flock
Snow on Koma Lake
Snowshoe Rabbit Group
Snowshoe Rabbit, image of a mounted print photograph
Snowshoe rabbit on the shore of Lake Superior
Snowshoe rabbit on the shore of Lake Superior
Snowy owl
Snowy Owl foot, illustration from William Beebe, "The Birds Its Form and Function"
Snowy Owl, from life
Snowy Owl on stub, Lake Superior, North Shore
Snowy Owl on stub, Lake Superior, North Shore
Snowy Owl on stub, Lake Superior, North Shore
Solitare, Dodo and Turkey, tibia comparison, illustration from the report of the National Museum by Lucas
Song Sparrow
Song Sparrow near nest
Song Sparrow, poor
Song Sparrow's nest, one egg
Song Sparrow's nest, one egg
Sora Rail's nest
Sora Rail's nest, opened
Sora Rails, two young
South East end of Hennepin Island, Mille Lacs, taken from top of rocks at North West end
Sparrowhawk, down still showing, two birds in captivity
Sparrowhawk, down still showing, two young birds in captivity
Sparrowhawk, fully fledged, two young birds in captivity, one bird blurred
Sparrow Hawk, male and female, illustration from Albert Kenrick Fisher, "The hawks and owls of the University States in their re
Spermophile, Striped Gopher crouching
Spider, burrow of psalistaps, illustration from Henry Christopher McCook, "American Spiders and their Spinningwork," 1889
Spider carrying cocoon, Dolomedes sexpunctatus, illustration from Henry Christopher McCook, "American Spiders and their Spinning
Spider, cocoon, from Henry Christopher McCook, "American Spiders and their Spinningwork," 1889
Spider, cocoon of Argiope cophinaria, illustration from Henry Christopher McCook, "American Spiders and their Spinningwork," 188
Spider laying foundation lines, illustration from Henry Christopher McCook, "American Spiders and their Spinningwork," 1889
Spider, snare of triangle spider, illustration from Henry Christopher McCook, "American Spiders and their Spinningwork," 1889
Spider, tetragnatha, navigating lake by silken sails, image from Henry Christopher McCook, "American Spiders and their Spinningw
Spider with captured locust, insular spider, illustration from Henry Christopher McCook, "American Spiders and their Spinningwor
Spiny softshell Turtle, Amyda spinifera
Spiranthes gracilis
Spiranthes gracilis