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A Review of the Middle American Tree Frogs of the Genus Ptychohyla
William Edward Duellman
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Wolf and Coyote Trapping: An Up-to-Date Wolf Hunter's Guide
A. R. Harding
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The Systematics of the Frogs of the Hyla Rubra Group in Middle America
Juan R. León
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Game Birds and Game Fishes of the Pacific Coast
Harry Thom Payne
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Vertebrates from the Barrier Island of Tamaulipas, México
Richard F. Johnston, Robert K. Selander, B. J. Wilks, and Gerald G. Raun
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The Amphibians and Reptiles of Michoacán, México
William Edward Duellman
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Middle American Frogs of the Hyla microcephala Group
William Edward Duellman and M. J. Fouquette
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Territory in Bird Life
Henry Eliot Howard
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Phylogeny of the Waxwings and Allied Birds
M. Dale Arvey
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Delineations of the Ox Tribe: The Natural History of Bulls, Bisons, and Buffaloes.
George Vasey
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The Barren Ground Caribou of Keewatin
Francis Harper
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The Recent Mammals of Tamaulipas, México
Ticul Alvarez
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The Determined Angler and the Brook Trout
Charles Barker Bradford
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Mammals of Northwestern South Dakota
J. Knox Jones and Kenneth W. Andersen
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Check-list of the Birds of Kansas
Harrison Bruce Tordoff
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Birds, Illustrated by Color Photography, Vol. 2, No. 2
Various
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Butterflies and Moths (British)
William S. Furneaux
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The Subspecies of the Mountain Chickadee
Joseph Grinnell
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A Field Study of the Kansas Ant-Eating Frog, Gastrophryne olivacea
Henry S. Fitch
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Birds Found on the Arctic Slope of Northern Alaska
James W. Bee
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Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster)
Henry S. Fitch
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Mammals of the Grand Mesa, Colorado
Sydney Anderson
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The Industries of Animals
Frédéric Houssay
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Birds, Illustrated by Color Photography, Vol. 2, No. 6
Various
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An Experimental Translocation of the Eastern Timber Wolf
Thomas F. Weise, William Laughlin Robinson, Richard A. Hook, and L. David Mech
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