This guestbook was kept at the Spokane Conservatory from 1943 to 1987. It contains signatures and notes from guests and performers of the conservatory, including notable signer Igor Stravinsky. The guestbook was curated by Rosaleen Moldenhauer, Hans Moldenhauer's late wife, from 1943 until her death in January of 1982. Hans Moldenhauer's next wife, Mary Moldenhauer, curated the guestbook from 1982 until 1987. In 1987 the guestbook was donated to Whitworth College as part of the Moldenhauer Archives.
"Spokane Conservatory Guestbook" Whitworth University (1987). Moldenhauer Archives.