Author
Page, William, 1861-1934
27
Academy of Natural Sciences of Philadelphia
10
Kalm, Pehr, 1716-1779
8
Doubleday, H. Arthur 1867-1941
5
Lawson, John, 1674-1711
5
Rafinesque, C. S. 1783-1840
5
Bartram, William, 1739-1823
4
Bonnemains, Jacqueline
4
Bour, Roger
4
Lesueur, Charles Alexandre, 1778-1846
4
Peale, Charles Willson, 1741-1827
4
Pennsylvania
4
Pre-1801 Imprint Collection (Library of Congress)
4
Salzman, L. F. 1878-
4
Abbott, Charles C. 1843-1919
3
American Imprint Collection (Library of Congress)
3
Baird, Spencer Fullerton, 1823-1887
3
Barton, Benjamin Smith, 1766-1815
3
Cape May Geographic Society
3
Catesby, Mark, 1683-1749
3
Davis, W. W. H. 1820-1910
3
Hall, James, 1811-1898
3
Josselyn, John, active 1630-1675
3
Le Page du Pratz, -1775
3
Page, Wm
3
Peale, Charles Willson, 1741-1827,
3
Smellie, William, 1740-1795
3
Smith, George, 1804-1882
3
Thompson, Zadock, 1796-1856
3
Torrey, John, 1796-1873
3
University of London. Institute of Historical Research
3
Agassiz
2
Bartram, John, 1699-1777
2
Bell, A.
2
Buffon, Georges Louis Leclerc, comte de, 1707-1788
2
Carnegie Museum of Natural History
2
Chester County Cabinet of Natural Science (West Chester, Pa.)
2
Clemson, Thomas Green, 1807-1888
2
Cope, John Hautenville
2
Delaware Academy of Natural Science
2
Delaware County Institute of Science (Media, Pa.)
2
Dieck, Hermann
2
Ditchfield, P. H. 1854-1930
2
Doubleday, H. Arthur
2
Ely, Warren S. 1855-1936
2
Essex Institute
2
Ewan, Joseph, 1909-1999
2
Formigli, Donald
2
Forster, Johann Reinhold, 1729-1798
2
Geijerstam, Karl Johan af, 1860-1899
2
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