Reconnaissance erosion survey of the State of California
1 : 1500000
"California erosion survey of 1934 by E.J. Carpenter in charge ... Acknowledgement is made to College of Agriculture, University of California, for assistance.|~|U.S. Dept. of Agriculture, Soil Conservation Service ; field survey under direction of G.L. Fuller ; map compiled by W.F. Beamon, chief draftsman.|~|"Base map by U.S. Geological Survey, 1929."
United States. Soil Conservation Service.
Outline geologic map of California showing oil and gas fields and drilled areas
1 : 1000000
Includes "Map of California showing major rock units and their significance for oil and gas," "Enlarged map of the Los Angeles basin area," index to oil and gas fields, 1 chart and 2 graphs.|~|prepared under the direction of Olaf P. Jenkins, Geologic Branch.
California. Division of Mines and Geology.
State of California, Dept. of Natural Resources, Division of Mines
1 : 1000000
"Population research and analysis and preparation of map ... by George A. Gendron, assisted by Edmond O. Burger; cartography by Walter R. Pilcher.|~|Includes 2 insets, county outline map, index with population figures, and notes.|~|U.S. Department of Agriculture, Bureau of Agricultural Economics, Division of Land Economics, with the valuable assistance of the U.S. Forest Service.
United States. Bureau of Agricultural Economics. Division of Land Economics.