the Caesars hotel tower that is on the right side of the postcard is the old Centurion Tower that was completed in 1973, I think. I have seen an aerial photo dated 1970 and that tower was not in the picture.

Petula Clark is on the Marquee, performed there through the 1970s. Was the 2nd entertainer to perform in the showroom after Andy Williams opened the place in August 1966.

Hope some of this helps!!