American Goldfinch #5
John James Audubon
Hummingbird
John James Audubon
Summer Tanager #2
John James Audubon
Audubon: Pelican #1
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Black-throated Green Warbler #1
John James Audubon
Audubon Heron
John James Audubon
Audubon: Hummingbird #2
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Common Flicker
John James Audubon
Audubon: Various Birds
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Audubon: Nighthawk
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Audubon: Nuthatch
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Audubon: Bobolink
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William Bartram (1739-1823) #1
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Alfred Russel Wallace (1823-1913)
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Audubon: Bluebird
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Audubon Lark
John James Audubon
Audubon Sparrow #9
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Audubon: Ovenbird
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Audubon: Grosbeak
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Audubon: Thrush #2
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Audubon: Warbler #1
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Henry Walter Bates #1
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Henry Walter Bates #4
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John James Audubon #7
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Audubon - Jay And Magpie
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John James Audubon #0103301
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Audubon Dove
John James Audubon
Audubon: Meadowlark
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Audubon: Titmouse
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Audubon: Bluebirds
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Audubon: Swallow #1
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Audubon: Bald Eagle
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Audubon: Woodpeckers
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Audubon: Blackbird
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Audubon: Dickcissel
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Audubon: Warbler #2
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Audubon: Titmouse #1
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Audubon: Chickadee, (1827-1838)
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Charles Robert Darwin #4
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Henry Bates (1825-1892)
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Alexander Von Humboldt #8
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Anna Maria Sibylla Merian #2
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Muir & Burroughs, C1899
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John Muir (1838-1914) #9
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Audubon: Warbler, (1827-1838)
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Audubon: Grosbeak #1
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Audubon: Hummingbird #3
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Audubon: Vireo #1
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Lazzaro Spallanzani #1
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Charles Robert Darwin
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Chevalier De Lamarck
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Anton Van Leeuwenhoek #2
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Charles Darwin, 1809-1882 #3
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Konrad Von Gesner #4
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Louis Agassiz (1807-1873) #3
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