First, big thanks to Darwination for sharing the Ballyhoo magazines.
More All Star Revival of the Bathroom Joke idents:
Far left: Not W.C. but I'm pretty sure it's then President Hebert Hoover, next might be Joe E. Brown but his mouth is often drawn wide open so it's atypical, may be former N.Y. Gov Al Smith, then Chaplin and Skippy, next is silent comic Ben Turpin, Maurice Chevalier and John D. Rockefeller, Paul Ludwig Hans Anton von Beneckendorff und von Hindenburg the president of Germany, low and next to Hindenburg is comic Eddie Cantor followed by ex-pres. Calvin Coolidge and Happy Hooligan with tin can on head. Some others I recognize are: Rudy Vallee with chin hanging over tub edge, Will Rogers just behind Vallee, next is Benito Mussolini whose hand in salut is in front of comic Ed Wynn, and at the end just over Ghandi's shoulder is Abie the Agent.