Includes text, index, inset of "Map of California, showing major rock units and their significance to exploration for chromite deposits," diagram, and 4 graphs.
"Revised and redrawn 1920 in cooperation with California State Dept. of Engineering; College of Agriculture, University of California; California State Water Commission."
"Map corrected and revised 1936 by Division of Irrigation Investigation, University of California and California Unit, Land-Use Planning Section, Resettlement Administration."