Opere The hummingbirds of the Santa Marta Region of Colombia American Ornithologists' Union, New York (1899) The Florida Puma Proceedings of the Biological Society of Washington 13:15-17. (1899) The Mammals and Birds of the Pearl Islands, Bay of Panama Harvard University Museum of Comparative Zoology, Bulletin 46 (8) : 137-160 (1905) con J. E. Thayer Notes on the Birds and Mammals of the Artic Coast of East Siberia New England Zoological Club, Proceedings, 5 : 1-66 (1914) con M. Allen Glover e J. E. Thayer
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