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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
Spirit Island, Lake Mille Lacs, rocks and launch, southwest side
Spirit Island, Mille Lacs, rocks from top of island looking west
Spoonbill Sandpiper, bills, illustration from article by Thayer in The Auk
Spotted Sandpiper near nest
Spotted Sandpipers nest
Spotted Sandpipers, small
Spotted Skunk background, landscape
Spragues Pipit nest
Spruce and Tamarack swamp
Spruce and Tamarack swamp
Spruce and Tamarack swamp with pond, cattails
Spruce and Tamarack swamp with pond, cattails
Spruce bog at Big Sandy Lake
Spruce Swamp
Spruce swamp
Spruce Swamp showing Laborador tea
Spruce tree showing spike like tops along the shore of Lake Itasca
Spurred Plover, illustration from Frederic A. Lucas, "The Weapons and Wings of Birds"
"Squaw Lake through the pines on the north shore"
Squirrel flying, flight, illustration from William Hornaday, "The American Natural Historian"
Stereo and single films from Gulfport Trip
Stereo and single films from Gulfport Trip
Stereo and single films from Gulfport Trip
Stereo film from Southern trip, "Aububon Place" archway
Stereo film from Southern trip, building
Stereo film from Southern trip, man standing on beach looking at ship in water
Stereo film from Southern trip, yard with fence
Stereographic film, asters
Stereographic film, man and woman
Stereographic film, patch of flowers
Stereographic film, Perry Harrison's sheep
Stereographic film, plant
Stereographic film, trees
Stereographic film, white water lilac
Sternum of Hoatzin, from William Pane Pycraft, "History of Birds"
Stick with Martin's nest
Stillwell baby, Johnnie Stillwell Jr.
Stilt, illustration from Alfred Newton, "A Dictionary of Birds"
Stomach glands of chicken, illustration from William Beebe, "The Bird Its Form and Function"
Stomach of Ducks, shedding of pads, illustration from article by Waldo Lee McAtee in The Auk
Striped ground squirrel facing front
Striped ground squirrel facing left
Striped ground squirrel facing right