"Fernbridge". Local Gallery. Aesthetic Design. August 7, 2011. Retrieved December 24, 2012.
arcadiapublishing.com
Bess, Carol; Newman, Beryl; Roberts, Ann, eds. (2004). Images of America: Ferndale. Charleston, South Carolina: Arcadia Publishing (copyright by The Ferndale Museum). p. 128. ISBN978-0-7385-2890-8. Retrieved August 31, 2016.
archive.org
Flood! December 1964–January 1965 (Report). State of California, Department of Water Resources. January 1965. Retrieved December 24, 2012. Bulletin No. 161, 43 pages plus appendices and charts
Myers, William A.; American Society of Civil Engineers. San Francisco Section. History and Heritage Committee (1977). Historic civil engineering landmarks. San Francisco, California: Pacific Gas and Electric Company. p. 52. OCLC6807860.
humboldt.ca.us
co.humboldt.ca.us
Tuttle, Donald C. (June 10, 2011). A brief history of Fernbridge(PDF) (Report). Eureka, California: Humboldt County, California. p. 8. Retrieved December 24, 2012.
Myers, William A.; American Society of Civil Engineers. San Francisco Section. History and Heritage Committee (1977). Historic civil engineering landmarks. San Francisco, California: Pacific Gas and Electric Company. p. 52. OCLC6807860.