Las Vegas Sun

September 22, 2014

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Frank Sinatra and Dean Martin sing a duet together during a 1960s performance in the Sands' Copa Room. The Rat Pack was born when Sinatra joined Martin onstage to sing "Sleep Warm" at the Sands on Jan. 20, 1960.

Sun File Photo

Frank Sinatra and Dean Martin sing a duet together during a 1960s performance in the Sands' Copa Room. The Rat Pack was born when Sinatra joined Martin onstage to sing "Sleep Warm" at the Sands on Jan. 20, 1960.