General Nature in 1981

Fifty Common Birds of Oklahoma and the Southern Great Plains by Sutton, George Miksch

The Cactus Coloring Book by Bernath, Stefen

National Audubon Society Field Guide to North American Butterflies by National Audubon Society

National Audubon Society Field Guide to North American Seashells by National Audubon Society

National Audubon Society Field Guide to North American Mushrooms by National Audubon Society