Hull, Donald A. (1996). Ian P. Madin; Matthew M. Mabey (eds.). "Earthquake hazard maps for Oregon"(PDF). Oregon Department of Geology and Mineral Industries. Archived from the original(PDF) on February 1, 2014. Retrieved January 26, 2014.
Zilverberg, Grace M. "Klamath Falls, Klamath County, Oregon"(PDF). Northwest Economic Adjustment Initiative Assessment. Forest Community Research. Archived from the original(PDF) on March 6, 2012. Retrieved January 26, 2014.
Hull, Donald A. (1996). Ian P. Madin; Matthew M. Mabey (eds.). "Earthquake hazard maps for Oregon"(PDF). Oregon Department of Geology and Mineral Industries. Archived from the original(PDF) on February 1, 2014. Retrieved January 26, 2014.
Zilverberg, Grace M. "Klamath Falls, Klamath County, Oregon"(PDF). Northwest Economic Adjustment Initiative Assessment. Forest Community Research. Archived from the original(PDF) on March 6, 2012. Retrieved January 26, 2014.