Heinrich Ries

Elements of Engineering Geology, by H. Ries and Thomas L. Watson

Economic geology

Clay Deposits and Clay Industry in North Carolina

Clays: Their Occurrence, Properties And Uses

Clays of Wisconsin and Their Uses, Issue 15

Clays of Wisconsin and Their Uses

History of the Clay-Working Industry in the United States

Geology of Orange County [new York]

Building Stones and Clay-Products

Clay Deposits of the Virginia Coastal Plain

Foundry Sands (Classic Reprint)

Mineral Resources of Virginia

Clays

Economic geology of the United States

Clays, Their Occurrence, Properties, and Uses - with Especial Reference to Those of the United States

Building Stones and Clay-Products; a Handbook for Architects

Engineering geology

Clays and Clay Industry of New Jersey

Lime and Cement Industries of New York