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"Earthquakes". The San Bernardino County Sun. June 29, 1992. p. 12. Retrieved May 30, 2015 – via Newspapers.com.
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web.archive.org
California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original(XLS file) on September 5, 2015. Retrieved June 30, 2015.
California Department of Transportation (October 2018). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.