Correspondence, Henry Ford and David Starr Jordan, Box 20, Folder 22, Hoover Institution Archives, Copyright © Stanford University.
Correspondence, editorial department Little, Brown & Co., and Samuel S. Marquis; unpublished manuscripts of Samuel S. Marquis. Published by permission of the Cranbrook Archives.
Excerpts from unpublished correspondence and manuscripts of Henry Ford; excerpts from Oral History Reminiscences. From the Collections of the Henry Ford Museum and Greenfield Village.
The Cyrus Adler Unpublished Correspondence Files; excerpts from Cyrus Adler to miscellaneous addressees. Published by permission of the Library of the Jewish Theological Seminary.
The Louis Marshall Papers, published by permission of the Jacob Rader Marcus Center of the American Jewish Archives, Cincinnati, Ohio.
Selections from the Schwimmer-Lloyd Collection, Manuscripts and Archives Division, published by permission of The New York Public Library, Astor, Lenox, and Tilden Foundations.