In the mid-1960s, Wheeler and a group of investors purchased Telex Corp., a maker of hearing aids, speakers, and other sound equipment. Wheeler was the largest shareholder, and served as chairman and chief executive officer. Under his leadership, Telex branched out to the manufacture of computer accessories, including printers and tape drives. Telex grew to employ 5,000 people in the Tulsa area, and Wheeler was a multimillionaire.
