An interesting map of the area south of the San Joaquin River from the Pacific Ocean to the foothills of the Sierra Nevada Mountains that was not published until 1852. Complete with its original 18 pp. "Report of the Secretary of War … of the Tulare Valley." The road to Los Angeles runs down the center of the map. There is also a road from Monterey to San Louis Obispo with several villages shown along the way. Derby's route is traced by dashed lines and several mountain passes are noted. Wheat says this map was of major importance to the Gold Rush. Rarely found with the report.

References: Wheat (Gold) #150.

Condition: B

The map has binding side tear closed on recto with tape, weakness along some folds, toned at one edge, and a couple marginal tears or splits. Report in paper covers with light scattered foxing.