Books by Olin Sewall Pettingill
My way to ornithology
Another penguin summer
Ornithology at the University
Ornithology at the University of Michigan Biological Station and the birds of the region
Birds of the Black Hills
Birds of the Black Hills
The bird watcher's America
The bird watcher's America
The bird life of the Grand Man
The bird life of the Grand Manan archipelago
The American woodcock
The American woodcock