Author
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National Geographic magazine (April 1973)
1
New York State Museum
1
Nolan, Edward J.
1
Norwood, Vera
1
Oeland, Glenn
1
Orr, William J.
1
Pasquier, Étienne-Denis, duc, 1767-1862
2
Peale family
1
Pennell, Francis W. 1886-1952
1
Philosophical Society of Washington
1
Rafinesque, C. S. 1783-1840
2
Reed, Thomas Croswell, d. 1883
1
Reynaud, Georges, 1941-
2
Rhoads, Samuel N.
1
Rhoads, Samuel Nicholson, 1862-1952
1
Seaton, Beverly
2
Sener, Samuel Miller, 1855-1911
1
Sewall, Thomas, 1786 or 1787-1845
1
Smith, John Bernhard, 1855-1912
1
Smithsonian Institution
1
Smithsonian Institution Thomas Lincoln Casey Fund
1
Stroud, Patricia Tyson
1
Thacher, Thomas Anthony, 1815-1886
1
Thompson, Joseph Parrish,
1
Thoreau, Henry David, 1817-1862,
2
University of Pennsylvania. Department of Medicine
1
Vail, R. W. G. 1890-1966
1
Van Horne, John C.,
1
Warner, Deborah Jean
1
Wasser, Henry, 1919-2016
1
Wied, Maximilian, Prinz von, 1782-1867
1
William Bartram
1
Willson, E. B. 1820-1895
1
Witherell, Elizabeth Hall,
2
Witte, Stephen S., 1966-
1
Xie, Lihong, 1952-
2