Taking Possession of Yerba Buena (San Francisco) California
The raising of the American flag and taking possession of Yerba Buena (San Francisco) California by Commander John B. Montgomery USN of the US sloop of war PORTSMOUTH. Action on 9 July 1846 by order of Commodore John Drake Sloat, USN.
From The Life of the Late Rear Admiral John Drake Sloat, USN by Major Edwin A. Sherman
Naval History and Heritage Command