Rocks & Minerals

The Common Rocks and Minerals of Missouri

Field Book of Common Rocks and Minerals

Geology: The Science of the Earth's Crust

Cave Regions of the Ozarks and Black Hills

Across Mongolian Plains

Gems in the Smithsonian Institution

Ancient Landscapes of the Grand Canyon Region

North America

Lifeful Stories of Lifeless Rocks

Gemstones

The Glaciers of the Alps

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

Underground Treasures: How and Where to Find Them

Fragments of Earth Lore: Sketches & Addresses Geological and Geographical

Mount Rainier, a Record of Exploration

Florida Caverns State Park

Underground Treasures: How and Where to Find Them

Fossil Forests of the Yellowstone National Park

Rockhounding Bible