California. Sonora quadrangle (30'), 1897 (1912)

A.H. Thompson, Geographer. E.M. Douglas, Topographer in charge. Triangulation by H.E.C. Feusier. Topography by R.H. Chapman. Surveyed in 1891.

USGSSonorae1897s1891rp1912USGS30CAsonorae1897s1891rp1912Merced CountyMariposa CountyStanislaus CountyTuolumne CountyCaliforniaWestern United StatesUnited States Geological SurveyU.S. Geological Survey30 minutetopographic1125000 scale