John B. Jentz, ‘The 48ers and the Politics of the German Labor Movement in Chicago during the Civil War Era; community formation and the rise of a labor press’, in Elliot Shore, Ken Fones-Wolf, James P. Danky (eds.), The German-American Radical Press: the shaping of a left political culture, 1850–1940 (Chicago, 1992), pp. 49ff.
