Mammals

A Scurry of Squirrels

Life at the Zoo: Notes and Traditions of the Regent's Park Gardens

Theodore Roosevelt & Bison Restoration on the Great Plains

A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, From Western Mexico

The Soul of a Lion

Life on the Rocks

The Horse of America in His Derivation, History, and Development

Beyond Rope and Fence

Through Arctic Lapland

Down from the Mountain

Waterfowl Identification Guide

Wild Animals of North America

Milch Cows and Dairy Farming

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The Arctic Prairies : a Canoe-Journey of 2,000 Miles in Search of the Caribou

A Thousand-Mile Walk to the Gulf (With Original Drawings & Photographs)

The Garden, You, and I

The Baculum in the Chipmunks of Western North America

The Amazing Armadillo

Wildlife Wars