Joseph Molitor was a Bohemian-born architect with a noteworthy legacy in Church architecture. Molitor's career in Chicago was brief for there is currently no evidence of any other commissions dating after 1915, and there is some speculation that he was a victim of the Great Influenza Epidemic after World War I. Joseph Molitor died on August 26, 1917 in Chicago. In the 1890s he formed a partnership with Charles W. Kallal and designed St. Vitus's Bohemian church. As an independent architect Molitor drew up the architectural plans for a number of churches, mostly in Chicago, that are noted for their refined architectural stylings. These include the Chicago churches of Sts. Cyril and Methodius (now closed), St. Lawrence, St. Francis of Assisi, St. Joseph Roman Catholic Church, St. Bonaventure and Holy Cross Roman Catholic Church as well as St. Mary's Church, Beaverville.
Joseph Molitor should not be confused with the architectural photographer Joseph W. Molitor. Joseph Molitor should not be confused with the contemporaneous priest Joseph Molitor.