Rocks & Minerals

A voyage to Spitzbergen containing an account of that country, of the zoology of the North; of the Shetland Islands; and of the whale fishery

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

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The Ancestry of Modern Amphibia: A Review of the Evidence

Walks and Talks in the Geological Field

Fragments of Earth Lore: Sketches & Addresses Geological and Geographical

Cave Regions of the Ozarks and Black Hills

The Natural History of Chocolate

A Short History of the Academy of Natural Sciences of Philadelphia

Devils Tower National Monument

Underground Treasures: How and Where to Find Them

The Ornithosauria