E. "Emmett" Howard Cadle was a Christian evangelist based in Indianapolis, Indiana. After his conversion in 1914, he built the Cadle Tabernacle in Indianapolis in 1921 and contributed to the growth of the radio evangelical movement during the 1930s. With the extended power of WLW, a radio station based in Cincinnati, Ohio, Cadle's broadcasts reached an estimated 30 million listeners by the end of the 1930s. In addition, Cadle frequently traveled by plane and car to reach speaking engagements in the Midwest and southern United States when he was not recording broadcasts.