Author
Bartram, John, 1699-1777
3
Boewe, Charles E., 1924-
3
Audubon, John James, 1785-1851
2
Bartram, William, 1739-1823
2
Hance, Anthony M.
2
Hudspeth, Robert N.,
2
Langley, S. P. 1834-1906
2
Pasquier, Étienne-Denis, duc, 1767-1862
2
Rafinesque, C. S. 1783-1840
2
Reynaud, Georges, 1941-
2
Seaton, Beverly
2
Thoreau, Henry David, 1817-1862,
2
Witherell, Elizabeth Hall,
2
Xie, Lihong, 1952-
2
Academy of Natural Sciences of Philadelphia
1
Agassiz, Elizabeth Cabot Caryd, 1822-1907
1
Agassiz, Louis,
1
American Antiquarian Society
1
Arden, Harvey
1
Audubon, Maria R. 1843-1925
1
Bache, Alexander Dallas,
1
Bancroft, George,
1
Benson, Maxine
1
Berkeley, Dorothy Smith
1
Berkeley, Edmund
1
Bonta, Marcia
1
Brinton, Daniel Garrison, 1837-1899
1
Buchanan, Lee LaForest, 1893-
1
Call, Richard Ellsworth, 1856-1917
1
Cassino
1
Coues, Elliott, 1842-1899
1
Crosby, Marshall R.
1
Davis, Wm. Harper
1
Duggan, Eileen P.
1
Durand, Elias, 1794-1873
1
Ewan, Joseph, 1909-1999
1
Ewan, Nesta
1
Frazer, Persifor, 1844-1909
1
Gallagher, Marsha V.
1
Geographical Society of Philadelphia
1
Gould, Augustus A. 1805-1866
1
Grey Owl, 1888-1938
1
Guyot, Arnold Henry,
1
Hart, Charles Henry, 1847-1918
1
Hoffmann, Nancy E.
1
Hollowell, Victoria C.
1
Hunt, William, 1825-1896
1
Jeffery, David
1
Jones, Dewitt
1
Kingsley, J. S. 1854-1929
1
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