Osteology of Amia Calva

Lectures on Biology

Myology of the Raven

The American Navy and Liberia

The Negro, a Menace to American Civilization

Reports of explorations and surveys, to ascertain the practicability of a ship-canal between the Atlantic and Pacific Oceans, by the way of the Isthmus of Tehuantepec

Published Figures and Plates of the Extinct Passenger Pigeon

America's Greatest Problem