The Haynes Foundation and Urban Reform Philanthropy in Los Angeles: A History of the John Randolph Haynes and Dora Haynes Foundation, by Tom Sitton. Published by the Historical Society of Southern California, Los Angeles, California, 1999.
John Randolph Haynes, California Progressive, by Tom Sitton. Published by Stanford University Press, Stanford, California, 1992.
The books, pamphlets, and ephemera of John Randolph Haynes, Dora Haynes, and the Haynes Foundation are housed at the UCLA Library, in the Special Collections Department, http://www.library.ucla.edu/libraries/special/scweb/calif.htm. Materials in the Haynes Collection date from the 1890s through the 1950s. The Collection includes the papers of Dr. Haynes and Franklin Hichborn, which document early 20th century California and Los Angeles reform politics.