The Sibley Field Guide to Birds of Western North America, Second edition
The Sibley Field Guide to Birds of Eastern North America, Second edition
Birds of the Boundary
BAIRD, Spencer F.
North American Hummingbirds: An Identification Guide
West, George C.
Science And Nature In Motion: Birds of North America
North American Important Bird Areas: A Directory of 150 Key Conservation Sites
Chipley, Robert, Editor
Birds of America
Pearson, Gilbert T.
Wings In The Wilderness
Cruickshank, Allan D.
Experiments on Species Discrimination in Myiarchus Flycatchers
Key to North American Birds. Two volumes
The Water Birds of North America, Volumes I and II
BAIRD, Spencer Fullerton, Thomas M. BREWER, and Robert RIDGWAY
United States Exploring Expedition: Herpetology. Two volumes