National Geographic Field Guide to the Birds of North America, Seventh Edition
DUNN, Jon L. and Jonathan ALDERFER
Bird Lore I-XXXII
The Audubon Society Master Guide to Birding, Volume 3: Old World Warblers to Sparrows
Farrand, John, Jr. (editor)
Birds of Organ Pipe Cactus National Monument
Wilt, Richard A.
North American Birds: A Coloring Book
Handbook of Birds of Eastern North America
Chapman, Frank M.
U.S. Pacific Railroad Surveys: Reports of Explorations and Surveys. Volume IX, Part II
Baird, Spencer Fullerton
A Bibliography of the Catalogs, Lists, Faunal and Other Papers on the Butterflies of North America N
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Diving Birds of North America
Johnsgard, Paul A.
A Swift Guide to Butterflies of North America Second Edition
Report Upon Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian:
Wheeler, Geo. M. & John J. Stevenson
The Temple of Tepoztlan, Mexico