"Reconnaissance of the Tulares Valley made by order of Brev. Brig. Gen. Riley, Commanding 10th Mil. Dept.", Derby, George Horatio (Lt)
Subject: California & Gold Rush
Period: 1850 (dated)
Publication: Senate Doc #110, 32nd Congress, 1st Session 
Color: Black & White
18.2 x 14.6 inches
46.2 x 37.1 cm
An interesting map of the area south of the San Joaquin River from the Ocean to the foothills of Sierra Nevada Mountains. A "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. Names Carmel. Several mountain passes are noted. A map of major importance according to Wheat.
References: Wheat (Gold) #150.
Folding as issued. Soft crease at binding corner.