Relief shown by contours and spot heights. "Topographic base map from available USGS 7.5-minute quadrangle Ortigalita Peak NW, CA 1969, photorevised 1984, DMA 1857 IV NW -- series V895 ; Charleston School, CA 1956, photorevised 1971, DMA 1857 IV NN -- series V895." "First printing, June 2007." Includes location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent 1974.