This report by Willis T. Lee discusses the geology and groundwater in this agriculturally rich region of central California. This area was a significant water source for Los Angeles prior to the creation of the aqueduct system. Accompanying the 28 pp. report are five illustrative plates and a small untitled map covering the area from Mono Lake south to Owens Lake, surrounded by the Sierra Nevadas and White Mountains. Numerous rivers and creeks are depicted along with a proposed damn site south of Mono Lake. Folds into salmon colored paper wrappers.

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Condition: A

Map is fine while text and plates are very good with light toning and isolated foxing. Library stamp on front cover, which is nearly detached.