RT Map DB /z-wcorg/ DS http://worldcat.org ID 17468942 LA English T1 Map of an exploring expedition to the Rocky Mountains in the year 1842 and to Oregon & North California in the years 1843-44 A1 Frémont, John Charles,, United States., Army., Corps of Topographical Engineers., PB Gales and Seaton? PP Washington, D.C.? YR 1845