Paleontology

Eight Lectures on Theoretical Physics

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida

Field Book: Pennsylvanian Plant Fossils of Illinois

Cambrian Ocean World

New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver

African Dinosaurs Unearthed

Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems