Collection consists of a steamboat pilot's license for George Anson Pease, July 3, 1862, allowing him to pilot steam vessels in the First District on the Willamette and Columbia rivers, Vancouver to Eugene to St. Helens; manuscript reminiscences of Pease, 18 pages, circa 1861-1870, about his experiences steamboating on the lower Willamette from 1850-1861.

Arthur Riggs (1871-1941) was a river pilot on the Columbia, Snake and Willamette rivers. Collection includes correspondence, 1937-1940, with information on the development of shipping on the upper Columbia River; autobiographical journals; steamboat history notes prepared by Frank J. Smith; and logbooks.

Oath of License, John H. Wolf, for the steamer Wilson G. Hunt, Portland, Oregon, December 29, 1865; and first class pilot's licenses for John H. Wolf, 1860-1867, from the District of Oregon allowing him to pilot steamboats on the Columbia and Willamette rivers from Portland to Astoria.