Rocks & Minerals

The Ultimate Rockhounding Handbook

Texas Rocks and Minerals

A Short History of the Academy of Natural Sciences of Philadelphia

Notes on Collecting and Preserving Natural-History Objects

Snails

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

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

Ancient Landscapes of the Grand Canyon Region

Agatized Rainbows

The Geologic Story of Glacier National Park

Gems in the Smithsonian Institution

Fossil Forests of the Yellowstone National Park

Glaciers of the Rockies and Selkirks

The Geologic Story of Palo Duro Canyon

Field Book of Common Rocks and Minerals

British Museum (Natural History) General Guide

The Common Rocks and Minerals of Missouri

Texas Gemstones

The Geologic Story of Colorado National Monument

Texas Rocks and Minerals: An Amateur's Guide