Oregon Improvement Company Records, 1880–1896

(Microfilm Edition)

University of Washington Libraries

Additional information at http://nwda.orbiscascade.org/ark:/80444/xv02697

The records of a company founded to mine coal and to ship it to Portland and San Francisco. Among its subsidiaries were the Pacific Coast Steamship Company and several northern railroads.

37 reels, 18-page guide