 A partial bibliography, written in English, of Horkheimer’s works can be found in S. Benhabib, W. Bonß, and J. McCole (eds.), On Max Horkheimer: New Perspectives, Cambridge, MA: MIT Press, 1993. An extensive bibliography of primary and secondary sources, written in German, can be found in Max Horkheimer Gesammelte Schriften, Band 19: Nachträge, Verzeichnisse, und Register, A Schmidt and G. Schmid Noerr (eds.), Frankfurt am Main: Fischer, 1996.