Nature

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

Earth Features and Their Meaning An Introduction to Geology for the Student and the General Reader

Poisonous Snakes of Kansas

The Geology of D.A.R. State Park, Mt. Philo State Forest Park, Sand Bar State Park

The Incredible Travel Tales of John Muir (Illustrated Edition)

Everglades Wildguide

Texas Rocks and Minerals: An Amateur's Guide

Mammals of the Southwest Mountains and Mesas

The Scott Country

Gatlinburg and the Great Smokies

Autobiography of the Rivers

The Buffalo Diary

Skyward Journeys

Biographies of Popular Birds and Animals

The Cow Diary

A Short History of the World in 50 Animals

Tales of the Most Exciting and Mysterious Deserts

Mystical Tales of the Oceans and Seas

Mushroom Magic

Features of Owls, Ostriches and Peacocks