1. Historical Liquefaction Localities, Monterey County, California, 1906, 1989 Point Stanford University Public content 1906. Rosenberg, Lewis I. This point shapefile shows areas that liquefied in the 1906 San Francisco or 1989 Loma Prieta earthquake as mapped by Youd and Hoose (1978) and Tin... Monterey County (Calif.). Planning Department.