Report of the Exploring Expedition to the Rocky Mountains. in the Year 1842, and to Oregon and North California in the Years 1843-44...Printed by order of the Senate of the United States.
Washington: Gales and Seaton, Printers, 1845. in the Year 1842, and to Oregon and North California in the Years 1843-44... Printed by order of the Senate of the United States. Washington: Gales and Seaton, Printers, 1845. First edition, Senate issue with all the scientific data. Octavo (9 x 5 3/4.....