L-R: Joey Bishop, Frank Sinatra and Dean Martin backstage in the Copa Room at the Sands Hotel in Las Vegas. The man behind the curtain at the extreme left is probably producer Jack Entratter.
Dean Martin onstage for his debut as a single star in the Sands Copa Room, March 6, 1957. Seated in front of the stage are producer Jack Entratter (with striped tie), Lucille Ball (with fur stole), Jack Benny (applauding), Desi Arnaz (in profile) and Debbie Reynolds (wearing pearl necklace); seated at the far right in front of the stage is Phil Harris (with cigarette).