Author
Britton, Nathaniel Lord, 1859-1934
24
Brown, Addison, 1830-1913
24
Heming, Arthur, 1871-1940
5
Tyrrell, J. W. (James Williams), 1863-1945
5
Bell, Robert, 1841-1917
4
Brunet, Ovide, 1826-1876
4
Geological and Natural History Survey of Canada
4
Macoun, John, 1831-1920
4
Smithsonian Migratory Bird Center
4
Tyrrell, James Williams, 1863-1945
4
Heming, Arthur Henry Howard, 1870-1940
3
Bailey, Vernon, 1864-1942
2
Bell, Robert
2
Cody, William J.
2
Fosberg, F. Raymond, Francis Raymond 1908-1993
2
Gordon, J. S.
2
Greenberg, Russell
2
Hazard, Gjon
2
Hitchcock, A. S. (Albert Spear), 1865-1935
2
Kevan, Peter G., 1944-
2
Porsild, A. E. 1901-
2
Raup, Hugh M. (Hugh Miller), 1901-1995
2
Stanek, Walter
2
Tyrrell, James, Williams, 1863-
1