Ecology

Hertfordshire

Forest Trees of Illinois

Guide to Yosemite

A Synopsis of the British Mosses

Woodland Paths

Birds, Beasts and Flowers

Cornell Nature-Study Leaflets

Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas

The new northland

An essay towards a natural history of serpents

Water Survival Skills

Shelter Building Basics

A Guide to Natural Bridges National Monument, Utah

Big Bend National Park, Texas

Perambulations of a Bee and a Butterfly

Extinction Race

Wildlife Rescue Action

Urban Bee Guides

Animals of no Importance

Natural History in Anecdote Illustrating the nature, habits, manners and customs of animals, birds, fishes, reptiles, etc., etc., etc