Who was the architect that designed the Sands Hotel and Casino sign for Mr. Entertainment?
Jack Entratter: Jack Entratter (February 28, 1913 – March 11, 1971), nicknamed "Mr. Entertainment", was an American business executive. Sands Hotel and Casino:  Designed by the architect Wayne McAllister, with a prominent 56 ft high sign, the Sands was the seventh resort to open on the Strip.
Wayne McAllister