Rio San Gabriel Battle Mexican-American War California 1848 battle plan mapSketch of the Passage of the Rio San Gabriel, Upper California, by the Americans, Discomfiting the Opposing Mexican Forces, January 8th, 1847. (Old Prints, 19th Century Prints, Americana, California, Mexican American War, Battle of Rio San Gabriel, Battle Plans). Issued 1848, Washington, D. C., Litho. Baltimore by E. Weber & Co. Earliest printed detailed plan of the Battle of Rio San Gabriel, an important battle in the California Campaign of the