Collection includes correspondence, memorabilia, and an account book later used as a picture scrapbook. Correspondence includes letters, most in German with translations, between John E. Gantenbein and Mary Stier, and between Gantenbein and family, friends, and colleagues. Also included is correspondence between J. Edward Gantenbein and Helen Louise Pittock concerning personal matters.

Collection includes manuscript correspondence between Reidt and his brother in Oregon, his father in Germany, and others.