Arnold, J. P., & Penman, F. (1933). History of the brewing industry and brewing science in America: Prepared as part of a memorial to the pioneers of American brewing science, Dr. John E. Siebel and Anton Schwarz ("Limited edition.".). Chicago: [s.n.].

Arnold, John Paul, and Frank Penman. History of the Brewing Industry and Brewing Science in America: Prepared As Part of a Memorial to the Pioneers of American Brewing Science, Dr. John E. Siebel and Anton Schwarz. "Limited edition.". Chicago: [s.n.], 1933.

Arnold, John Paul, and Frank Penman. History of the Brewing Industry and Brewing Science in America: Prepared As Part of a Memorial to the Pioneers of American Brewing Science, Dr. John E. Siebel and Anton Schwarz. "Limited edition.". Chicago: [s.n.], 1933.