In 1925, the Atwater Kent Manufacturing Company became the largest maker of radios in the United States. The company also sponsored the popular "The Atwater Kent Hour", a top-rated radio concert music program heard on NBC and CBS from 1926 to 1934. The show featured top entertainment and became one of the most popular and acclaimed regular radio programs of the era. At its peak in 1929, the company employed over 12,000 workers manufacturing nearly one million radio sets. Its models included the metal-cabinet seven-tube "Model 57" at US$105 and the wooden-cabinet eight-tube "Model 60" at US$80. The plant itself was an architectural sensation and received hundreds of visitors annually. By 1931, the company boasted that it had produced over three million radios.