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NYH149703: Fort Union, Missouri, 1843 (w/c, ink and graphite on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: NYH149703
Fort Union, Missouri, 1843 (w/c, ink and graphite on paper)
Sprague, Isaac (fl.1843)
ATH3081997: Wren, 1840 (w/c & ink on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081997
Wren, 1840 (w/c & ink on paper)
ATH3081895: Blackpoll Warbler (w/c & ink on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081895
Blackpoll Warbler (w/c & ink on paper)
ATH3081898: Black Throated Green Warbler, 1840 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081898
Black Throated Green Warbler, 1840 (w/c on paper)
ATH3081908: Cat Bird, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081908
Cat Bird, 1841 (w/c on paper)
ATH3081912: Cherry Bird, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081912
Cherry Bird, 1841 (w/c on paper)
ATH3081911: Cedar Waxwing (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081911
Cedar Waxwing (w/c on paper)
ATH3081969: Savannah Sparrow, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081969
Savannah Sparrow, 1842 (w/c on paper)
ATH3081893: Arethusa bulbosa (pencil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081893
Arethusa bulbosa (pencil on paper)
ATH3081903: Buff-Breasted Sandpiper (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081903
Buff-Breasted Sandpiper (w/c on paper)
ATH3081909: Caterpillar (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081909
Caterpillar (w/c on paper)
ATH3081973: Six Birds' Eggs (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081973
Six Birds' Eggs (w/c on paper)
ATH3081977: Summer Yellow Bird (pencil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081977
Summer Yellow Bird (pencil on paper)
ATH3081980: Trientalis americana (pencil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081980
Trientalis americana (pencil on paper)
ATH3081982: Twelve Birds' Eggs (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081982
Twelve Birds' Eggs (w/c on paper)
ATH3081984: Water Pipit (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081984
Water Pipit (w/c on paper)
ATH3081988: White Throated Sparrow (w/c & ink on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081988
White Throated Sparrow (w/c & ink on paper)
ATH3081994: Wood Duck (oil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081994
Wood Duck (oil on paper)
ATH3081891: American Goldfinch, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081891
American Goldfinch, 1841 (w/c on paper)
ATH3081897: Black Throated Blue Warbler, 1841 (w/c on paper and ink), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081897
Black Throated Blue Warbler, 1841 (w/c on paper and ink)
ATH3081900: Bobolink, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081900
Bobolink, 1841 (w/c on paper)
ATH3081901: Bobwhite, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081901
Bobwhite, 1841 (w/c on paper)
ATH3081914: Chipmunk, 1840 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081914
Chipmunk, 1840 (w/c on paper)
ATH3081919: Cow Blackbird, 1841 (w/c & ink on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081919
Cow Blackbird, 1841 (w/c & ink on paper)
ATH3081925: Field Sparrow, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081925
Field Sparrow, 1841 (w/c on paper)
ATH3081929: Golden Crested Wren, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081929
Golden Crested Wren, 1842 (w/c on paper)
ATH3081945: Little Tern, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081945
Little Tern, 1842 (w/c on paper)
ATH3081962: Quail, 1839 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081962
Quail, 1839 (w/c on paper)
ATH3081964: Red Breasted Snipe, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081964
Red Breasted Snipe, 1842 (w/c on paper)
ATH3081979: Tree Sparrow, 1841 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081979
Tree Sparrow, 1841 (w/c on paper)
ATH3081985: Whippoorwill, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081985
Whippoorwill, 1842 (w/c on paper)
ATH3081987: White Eyed Vireo, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081987
White Eyed Vireo, 1842 (w/c on paper)
ATH3081998: Yellow Back Warbler, 1842 (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081998
Yellow Back Warbler, 1842 (w/c on paper)
ATH3081894: Aster radula: Begins to Flower in July (pencil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081894
Aster radula: Begins to Flower in July (pencil on paper)
ATH3081905: Cardinal flower (w/c on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081905
Cardinal flower (w/c on paper)
ATH3081917: Clintonia borealis (pencil on paper), Sprague, Isaac (fl.1843) / Bridgeman Images
ID: ATH3081917
Clintonia borealis (pencil on paper)