Edwin V. Sumner to Richd. C. Drum, September 25, 1861

No. 180. y San Francisco, September 25, 1861, * * * * * * *

2. The counties of San Luis Obispo, Buena Vista, Tulare, Santa Barbara, Los Angeles, San Bernardino, and San Diego, in the southern part of the State of California, will constitute a command within this department to be known as the District of Southern California, headquarters at Los Angeles. Col. George Wright, Ninth Regiment of Infantry, is assigned to the command of the district.

3. The headquarters of the Fourth Regiment of Infantry will be stationed at San Bernardino, to which point Bvt. Lieut. Col. Robert ©. Buchanan, major Fourth Infantry, with the regimental staff and band will proceed.

By order of Brigadier-General Sumner: