The Percy Johnson Papers contain materials related to the life Percy Johnson and the Walla Walla Symphony Society. These papers contain photographs, Percy's musician's union card, and programs for the Walla Walla Symphony. These papers, which date from 1901 through 1969, also contains newspaper clippings and a history of the Walla Walla Symphony Society.
The Walla Walla Symphony Records contains board of Directors minutes, concert programs, newspaper clippings, video and audio tapes, scrapbooks, and other memorabilia from the 100-year history of the Walla Walla Symphony Orchestra. The collection dates from 1907 to 2012.