9 1/2" x 12 1/4" Pre-gold rush North America map, a steel engraved map with excellent western detail, produced by William Orr from the Map by John Dower. Content describes areas from the California coast and rivers to identified Pacific islands, over to San Antonio and Matagorda Texas, Albuquerque & Santa Fe, plus riparian information from the Lewis and Clark publications, still omitting the Fremont topography of 1848. A exceptional map. Fine condition. Very Original