A three-stop positif built by Fritz Noack in 1965 has the honor of being the first mechanical-action organ, antique or modern, at the university. It has foundation stops at 8', 4' and 2'. His opus 33 was one of two identical positifs built at the same time, the other now residing in the Unitarian Church in Andover, Massachusetts. Our positif has been used on stage by the Iowa State Singers, Musica Antiqua, and by guest artists such as Karel Paukert.