Rocks & Minerals

Introduction to the Study of Palæontological Botany

Researches on the Visual Organs of the Trilobites

Relics of Primeval Life: Beginning of Life in the Dawn of Geological Time

Water Reptiles of the Past and Present

Glossary of Geological and Other Scientific Terms Used in the Principles of Geology

Eurypterids of the Devonian Holland Quarry Shale of Ohio

Deserts: Geology and Resources

Heroes of science : Botanists, zoologists, and geologists

Cave Hunting

The Geologic Story of Glacier National Park

The Lost Lemuria

Time and Tide

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The zoology of the voyage of H.M.S. Beagle: Fossil mammalia

Submerged forests

Voyager 1 Encounters Saturn

The Survival Handbook

The Rise and Progress of Palaeontology

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus

Fossil Forests of the Yellowstone National Park