The 150th Anniversary Symposium of the Whitman Tragedy Collection, which dates from circa 1997,consists of a program, newspaper clippings, a photograph album, and video recordings from the 150th anniversary symposium of the Whitman Incident held at Whitman College in 1997.

The Altrusa Civic Center Committee Records, which date from 1939 to 1958, contain a scrapbook, a book, and a program for Margaret Broughton's debut concert.

The Willard H. Babcock Papers, which date from 1859 through 1905, includes a map of the Oregon Trail, newspaper clippings and a journal from Willard H. Babcock.

The Tabitha Brown Collection, which dates from 1854 through 1992, contains materials related to Tabitha Brown. This collection consists of newspaper articles and a transcription of a pioneer letter titled "A Brimfield Heroine."

The California Photograph Collection, spanning from 1898 through 1963, consists of photographs and postcards depicting various locations in prominent California cities. It also houses advertisements for a Singer sewing machine and pictures of sites in California with explanations attached to them.

The Henri M. Chase Papers includes materials related to pioneer Henri M. Chase. These papers contain correspondence, a newspaper account of his life, and a roster of the members of Company M. There are also mortgage loan papers and a series of letters between Whitman College president Winslow S. Anderson and the nephew of Captain Chase, and other related ephemera.

The Civilian Conservation Corps Collection, which dates from 1934 to 1991, contains material related to the Civilian Conservation Corps in Walla Walla, Washington. The collection includes photographs, newspaper clippings, and a newsletter.

The Constitutional Convention of Washington Territory Collection, which dates from 1878 through 1978, contains records and documents related to the Constitutional Convention of Washington Territory in the late nineteenth century.

The Copies of "Lyman's History of Old Walla Walla County" contains reproductions of photographs and sketches from "Lyman’s History of Old Walla Walla County" written by William Denison Lyman.

The Giddeon Cummings Papers, which date from circa 1862, houses a copy of a photocopy of a diary written by Gideon Cummings.