It's a blunt logo, but it gets the point across. As you might expect, it was connected to WOW on the AM side, and as you also might expect, the AM stations gave up the letter from something stupid. You might not have expected . . this:

The owners operated under a United States Supreme Court ruling which had forced the Woodmen of the World, who had founded WOW in 1923, to divest itself of the radio stations because they threatened the Woodmen's tax-exempt status

WOW stood for Woodmen of the World.