Animals

Wild Animals of the Rockies. With a List of Mammals found in Rocky Mountain National Park

The Young Woodsman; Or, Life in the Forests of Canada

Mammals of Mount Rainier National Park

Secrets of Earth and Sea

The Turquoise Story Book: Stories and Legends of Summer and Nature

Yellowstone and Grand Teton National Parks

Flower Guide: Wild Flowers East of the Rockies (Revised and with New Illustrations)

Western Bird Guide: Birds of the Rockies and West to the Pacific

Fur Farming for Profit, with Especial Reference to Skunk Raising

The Pleistocene of North America and its vertebrated animals

Shearwater

The Seashore Book: Bob and Betty's Summer with Captain Hawes

Bird Guide Water Birds, Game Birds, and Birds of Prey

The Complete Angler 1653

Flowers of Mountain and Plain

Carlsbad Caverns National Park, New Mexico

Bird Guide: Land Birds East of the Rockies, from Parrots to Bluebirds

The Flying Machine Boys in the Wilds The Mystery of the Andes

Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis

Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado