Paleontology

The Chain of Life in Geological Time

The Ivory King

Australasian Fossils: A Students' Manual of Palaeontology

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida

The Coal Measures Amphibia of North America

Essay on the Theory of the Earth

Palæontological Report of the Princeton Scientific Expedition of 1877

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

The cretaceous birds of New Jersey

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

Dinosaurs, with Special Reference to the American Museum Collections

Australasian Fossils: A Students' Manual of Palaeontology

Extinct Monsters

Animals of the Past

Some Salient Points in the Science of the Earth

Fossil Butterflies

The Coal Measures Amphibia of North America

The Rise and Progress of Palaeontology

Fossils