Rocks & Minerals

The Geology of Mt. Mansfield State Forest

The Geology of Groton State Forest

Geology and Inhabitants of the Ancient World

Thoughts on a Pebble, or, A First Lesson in Geology

The Forms of Water in Clouds and Rivers, Ice and Glaciers

Essay on the Theory of the Earth

Industrial Minerals and Metals of Illinois

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus

The Ultimate Rockhounding Handbook

The Common Rocks and Minerals of Missouri

The Nakimu Caves, Glacier Dominion Park

The Geologic Story of Colorado National Monument

Texas Rocks and Minerals: An Amateur's Guide

The Geologic Story of Palo Duro Canyon

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

The Geology of Button Bay State Park

Preliminary Report on Gowganda Mining Division District of Nipissing Ontario

Fossil Forests of the Yellowstone National Park

The Geologic Setting of the John Day Country: Grant County, Oregon

The Pleistocene of North America and its vertebrated animals