(Jenkins, Olaf P.; Averill, Charles V.; et al).
The Mother Lode Country: Geologic Guidebook. Along Highway 49--Sierran Gold Belt. Bulletin 141. Prepared Under the Direction of Olaf P. Jenkins.
San Francisco: Department of Natural Resources, State of California, September 1948. September 1948. - Oblong quarto, tan cloth titled in black on the front cover & the spine. The covers show some minor wear at the corners. 164 pages, profusely illustrated in black & white and in color, including geologic maps outlined in color. A previous owner's name is penned on the front endpaper. Very good.
Centennial Edition. Very good .

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Keywords: AMERICANA; GOLD RUSH; GEOLOGY; MINING; GOLD; SIERRAN GOLD BELT; GEOLOGIC GUIDEBOOK; AMERICANA; WEST; OLAF P. JENKINS; MAPS; GEOLOGIC MAPS; ILLUSTRATIONS; CALIFORNIA DEPARTMENT OF NATURAL RESOURCES; MOTHER LODE COUNTRY; HISTORY.