Doomed by cartoon: How cartoonist Thomas Nast and the New-York Times brought down Boss Tweed and his ring of thieves. Adler, J., Hill, D., & Nast, T. New York: Morgan James, 2008.

Drawn & Quartered: The History of American Political Cartoons. Hess, S. & Northrop, S. (1996). .Montgomery, AL: Elliott & Clark.

Editorial cartoon awards 1922-1997: from Rollin Kirby and Edmund Duffy to Herbert Block and Paul Conrad.  Fischer, H. D., & Fischer, E. J., 1999. München: Saur, 1999. 
Summary: The history of the Pulitzer Prize for editorial cartoons in the United States.

Great cartoonists and their art. Wood, A. Gretna, LA: Pelican Pub. Co., 1987.
Summary: Biographies and history of cartoonists.

Herblock's history: Political cartoons from the crash to the millennium. Block, H. Washington, D.C.: Library of Congress, 2000. 
Summary: Library of Congress chronicling political cartoons.

The 1970s, best political cartoons of the decade. Robinson, J. New York: McGraw-Hill., 1981.
Summary: Collection of political cartoons from 1965-1985.

Them damned pictures: explorations in American political cartoon art. Fischer, R. North Haven, CT: Archon Books, 1996.
Summary: 19^th & 20^th Century political cartoons.