I came across this feature in the December 3, 1966 edition of Billboard. Claude Hall does a look at WKY programming and a focus on OKC radio. My memory seems a little fuzzy on this time but I was only in the 6th grade at the time. Check it out.
http://books.google.com/books?id=eQ8EAAAAMBAJ&pg=PA34&dq=billboard,+december+3,+1966&hl=en&sa=X&ei=m2EXT8qBJ6aJsQL-z8yOAg&ved=0CDYQ6AEwAA#v=onepage&q=billboard%2C%20december%203%2C%201966&f=false
http://books.google.com/books?id=eQ8EAAAAMBAJ&pg=PA34&dq=billboard,+december+3,+1966&hl=en&sa=X&ei=m2EXT8qBJ6aJsQL-z8yOAg&ved=0CDYQ6AEwAA#v=onepage&q=billboard%2C%20december%203%2C%201966&f=false