Biographical memoir of Charles Otis Whitman, 1842-1910

Edward Sylvester Morse

The Behavior Of Pigeons. Posthumous Works Of Charles Otis Whitman

The Personality, Heredity and Work of Charles Otis Whitman, 1843-1910.

Charles Benedict Davenport

Elementary German, an Outline of the Grammar, with Exercises, Conversations, and Readings, by Charles P. Otis ...

Charles Otis

A laboratory manual for work in general science, by Otis W. Caldwell, W. L. Eikenberry, and Charles J. Pieper.

Otis Caldwell