Nature

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

The Great Adventure Of Typhoon The Elephant

Island of Woods

A Year's Turning

The Freewood Years

Secret Places Of West Cork Coast

The Secret Places Of The Shannon

Conversations with Nature

In the Mountains Green

Verses

Autobiography of the Rivers

The Buffalo Diary

Skyward Journeys

Biographies of Popular Birds and Animals