Carroll, Peter N. The Odyssey of the Abraham Lincoln Brigade : Americans In the Spanish Civil War. Stanford, Calif.: Stanford University Press, 1994. Print.
Geiser, Carl. Prisoners of the Good Fight : the Spanish Civil War, 1936-1939. Westport, Conn.: L. Hill, 1986. Print.
Landis, Arthur H. “Americans in Spain.” The Abraham Lincoln Brigade. [1st ed.] New York: Citadel Press, 1967. Print.
Wallach, Hy. Abraham Lincoln Brigade Archives. http://www.alba-valb.org/resources/document-library/captured-by-the-fascists-behind-enemy-lines/?searchterm=hy.