The Birth of Top 40 Radio: The Storz Stations’ Revolution of the 1950s and 1960s - Richard W. Fatherley, David T. MacFarland - Google Books

http://books.google.de/books?id=JfILAQAAQBAJ&pg=PA194&lpg=PA194&dq=todd+storz+kowh&source=bl&ots=Mk7gM0uYu3&sig=quldQKmawkv5Kkh-

“Top 40” was the preeminent American radio format of the 1950s and 1960s. Although several radio station group owners offered their own versions of the format, the AM stations owned by Todd Storz and his father were acknowledged as the principal developers…