Powel Crosley, Jr., put WLW on the air in Cincinnati in 1922 with the modest power of 50 watts. The station was built to promote the sale of Crosley radios. Under Crosley's leadership, and with massive financing, WLW grew from a tiny station to the country's most powerful broadcaster in just twelve years. Here are some images showing the beginnings of WLW, "The Nation's Station".
Palatial New WLW - WSAI Studios in the Crosley Building, 1930