San Francisco Earthquake Snapshots, Utah State University Special Collections and Archives, P0346, Box 1, no. 2, 9.

"The San Andreas Fault", by Sara S. Schultz and Robert E. Wallace, U.S. Geological Survey Information Services, last modified July 11, 2013. Accessed August 20, 2015, http://pubs.usgs.gov/gip/earthq3/safaultgip.html.

"What Will Really Happen when San Andreas Unleashes the Big One?", Sara Zeilinski, Smithsonian.com, May 28, 2015. Accessed August 20, 2015, http://www.smithsonianmag.com/science-nature/what-will-really-happen-california-when-san-andreas-unleashes-big-one-180955432/?no-ist.

San Francisco; A Chronological and Documentary History 1542-1970, Compiled and Edited by Robert Mayer (New York: Oceana Publications, 1974), 10-38.