Geary, John W. A Politician Goes to War: The Civil War Letters of John White Geary. Edited by William Alan Blair. University Park: Pennsylvania State University Press, 1995. ISBN 0-271-01338-9.
Johnson, Samuel A. The Battle Cry of Freedom: The New England Emigrant Aid Company in the Kansas Crusade. Lawrence: University of Kansas Press, 1954. OCLC192098112.
Socolofsky, Homer E. Kansas Governors. Lawrence: University Press of Kansas, 1990. ISBN 0-7006-0421-9.