Frank Sinatra performing in the Copa Room at the Sands Hotel in the 1960s.
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Jack Entratter (center) and Frank Sinatra (right) with Copa Girls at a rehearsal for "Ziegfeld Follies" in June 1954.
Dean Martin (left) and Frank Sinatra performing at the Copa Room in the Sands Hotel sometime in the 1960s.
Dean Martin's opening night at the Sands with Frank Sinatra (right), January 22, 1964.
Joey Bishop serving drinks to Dean Martin and Frank Sinatra onstage at the Sands in April 1966.
Dean Martin's opening night at the Sands Hotel with his pal, Frank Sinatra (right) joining in, January 22, 1964.
Dean Martin (wearing hat) and others clown around during rehearsal at the Sands Hotel in December 1959.