1. Geologic map of the Palo Alto and part of the Redwood Point 7-1/2ʹ quadrangles, San Mateo and Santa Clara counties, California Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. California, San Mateo County, and Santa Clara County.