ALLEN, A. J. Ten Years in Oregon. Travels and Adventures. Ithaca, NY: Mack, Andrus, & Co., 1848. Contemporary calf. -- FREMONT, John Charles (1813-1890). Report of The Exploring Expedition to The Rocky Mountains in the year 1842, and to Oregon and North California in the years 1843-'44. Washington, D. C.: Printed by Order of the Senate, by Gales and Seaton, 1845. 4 lithographed maps (2 folding); 22 lithographed plates. Contemporary brown cloth. FIRST EDITION. Graff 1436; Howes F-370; Sabin 25845; Streeter VI:3131; Wagner-Camp 115:1. Provenance: R. C. A. Prior (armorial bookplate). -- GREENHOW, Robert T. (1800-1854). The History of Oregon and California, and the other territories on the North-West Coast of North America. London: John Murray, 1844. Contemporary half calf. -- HINES, Gustavus. A Voyage Round the World: With a History of the Oregon Mission. Buffalo: George H. Derby and Co., 1850. Publisher's brown cloth. -- PARKER, Samuel. Journal of an Exploring Tour Beyond the Rocky Mountains. Ithaca, NY: Published by the Author, 1840. Includes map of Oregon territory. Contemporary cloth. -- THORNTON, Jessy Quinn. Oregon and California in 1848.... New York, 1849. Vol I only. Publisher's brown cloth. -- Together, 6 works in 6 volumes, all 8vo, condition generally very good.