Chapman's 'Color Key to North American Birds'
Chapman, Frank M. (Frank Michler), 1864-1945
Article
1904
The Auk
21
296--297
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/122327 DOI: https://doi.org/10.2307/4070072