Author
Bell, William Abraham
3
Möllhausen, Balduin, 1825-1905
3
Garrard, Lewis Hector, 1829-1887
2
Pattie, James O. 1804?-1850?
2
Audubon, John Woodhouse, 1812-1862
1
Audubon, Marie Rebecca, 1843-
1
Bieber, Ralph P. 1894-
1
Coues, Elliott, 1842-1899
1
Flint, Timothy, 1780-1840
1
Garcés, Francisco Tomás Hermenegildo, 1738-1781
1
Graham, J. D. 1799-1865
1
Gregg, Josiah, 1806-1850
1
Hodder, Frank Heywood, 1860-1935
1
Humboldt, Alexander von, 1769-1859
1
Humboldt, Alexander von, 1769-1859,
1
Malte-Brun, Conrad, 1775-1826
1
Möllhausen, Balduin, 1825-1905,
1
United States. Army. Corps of Topographical Engineers
1
Willard, Rowland, 1794-1884
1
Winship, George Parker, 1871-1952
1