Rocks & Minerals

Texas Rocks and Minerals

Links With the Past in the Plant World

The Ultimate Rockhounding Handbook

Snails

Ancient Landscapes of the Grand Canyon Region

The Book of the Pearl

The Geology of Mt. Mansfield State Forest

Texas Gemstones

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

Florida Caverns State Park

Field Book of Common Rocks and Minerals For identifying the Rocks and Minerals of the United States and interpreting their Origins and Meanings

Mount Rainier, a Record of Exploration

The Geologic Story of Colorado National Monument

The Geology of Button Bay State Park

The Common Rocks and Minerals of Missouri

Geology: The Science of the Earth's Crust

Notes on Collecting and Preserving Natural-History Objects

Beach Rambles in Search of Seaside Pebbles and Crystals

The Geologic Story of Glacier National Park

Texas Rocks and Minerals: An Amateur's Guide