[The] instrument was replaced in 1940 with the present organ, which was built by the W.W. Kimball Co. of Chicago, Illinois, in 1933 for its Kimball Hall, a well-known recital venue in Chicago's Loop. Kimball Hall was home to a number of the builder's instruments over several decades, which were sold when a more up-to-date instrument was needed for demonstration purposes. Kimball relocated the organ to Zion Church and placed it behind a five-flat Gothic facade of pipes that matched the new altar and pulpit, carved by Alois Lang, a master carver of Oberammergau, Germany, who executed commissions for the American Seating Company. The organ was dedicated with the church on September 29, 1940. -- 2007 OHS Atlas