Dinosaurs & Prehistoric

The Prehistoric World; Or, Vanished races

A voyage to Spitzbergen containing an account of that country, of the zoology of the North; of the Shetland Islands; and of the whale fishery

Life's Dawn on Earth

Fossils: A Story of the Rocks and Their Record of Prehistoric Life Denver Museum of Natural History, Popular Series No. 3

Prehistoric Men

Notes on a Tour Through the Western part of The State of New York

Dinosaurs, with Special Reference to the American Museum Collections

Sea Monsters Unmasked, and Sea Fables Explained

Animals of the Past

Camps and Trails

The Romance of Natural History, Second Series

Mount Rainier, a Record of Exploration

A Short History of the Academy of Natural Sciences of Philadelphia

The Crest of the Continent: A Summer's Ramble in the Rocky Mountains and Beyond

Report on the Migration of Birds in the Spring and Autumn of 1881. Third Report

Some Common Birds Useful to the Farmer

Primitive Man

The Speech of Monkeys

Eurypterids of the Devonian Holland Quarry Shale of Ohio

The Land That Time Forgot