5042988 A view of Yerba Buena (San Francisco), 1933 (colour lithograph) by American School, (20th century); Private Collection; (add.info.: On July 9, 1846 Capt. Montgomery of the Sloop of War Portsmouth raised the American Flag in the plaza (now Portsmouth Square) of the Spanish trading post Yerba Buena and seized the region for the United States, by Parker Lee Hall (1898-1982)); American, out of copyright.