Maps. California. Geology of bituminous sandstone deposits near Santa Cruz, Santa Cruz County, Calif., prepared by Ben M. Page, M. Dean Williams, Eiler L. Herulrickson, Clifford N. Holmes, and William J. Mapel; oil and gas investigations, preliminary map 27 [with text] by Ben M. Page and Clifford N. Holmes. Scale 900 ft.=3 in., contour interval 20 ft. n. p.