John James  Audubon (American, born Haiti, 1785-1851). <em>Severn River Flying Squirrel-Rocky Mountain Flying Squirrel</em>. Lithograph, 27 x 21 in. (68.6 x 53.3 cm). Brooklyn Museum, Gift of the Estate of Emily Winthrop Miles, 64.98.71 (Photo: Brooklyn Museum, 64.98.71_IMLS_PS4.jpg)
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