Environmental Protection

Literary Pilgrimages of a Naturalist

Tinicum & Eastwick

The Land of Little Rain

Wild Life at the Land's End

A Pictorial Guide to Mesa Verde National Park

The Wilderness Castaways

The Strangest Things in the World: A Book About Extraordinary Manifestations of Nature

Wilderness Honey

The apiary; or, bees, bee-hives, and bee culture

The Salton Sea: An account of Harriman's fight with the Colorado River

The Wanderings of an Elephant Hunter

American Big-Game Hunting: The Book of the Boone and Crockett Club

Bee-Keeping

Wild Life Near Home

Descriptions of Two Species of Frogs, Genus Ptychohyla

Forest, Lake and Prairie

The Toilers of the Field

Wild Earth

The book of earth

The Migration of North American Birds