A very hard to find original 1967 report, kinda signed by the author!
This book is from the estate of Geologist and Author W.R. Moyle Jr., of Cypress California! He wrote this book and compiled the geology for map 2. This book was his personal library copy and since he wrote his name on it, it is a kind of signed by the author book!
State Of California - The Resources Agency - Bulletin No. 91-13
WATER WELLS AND SPRINGS IN SODA, SILVER, AND CRONISE VALLEYS, SAN BERNARDINO COUNTY, CALIFORNIA
Prepared by the United States Department Of The Interior Geological Survey
Federal-State Cooperative Groundwater Investigations
Map 1 is located in the book on page 16.
Map 2 is located in a pocket in the rear. Geology compiled and mapped by W.R. Moyle Jr. It is a huge map - 42 x 50 inches. Some wear to the map, a few crease corners have tears.