New Frontier Hotel and Casino was subsequently rebuilt and renamed the Hotel Last Frontier in 1942. On April 4, 1955, it was renamed the New Frontier, following a modernization of the resort. The resort had the distinction of hosting Elvis Presley's first Vegas appearance in 1956, and the final performance of Diana Ross and The Supremes on January 14, 1970. In the 1950s and the early 1960s, the New Frontier went through a succession of owners and operators. In 1966 and 1967 (by which time it had been renamed The Frontier) the casino had secret ownership interests by Anthony Joseph Zerilli and Michael Polizzi, "two
Diana Ross was to publicly introduce a new Motown recording act. Though she herself did not claim their discovery, Motown's publicity department credited Ross with having discovered the Jackson 5. Ross would introduce the group during several public events, including "The Hollywood Palace". In November, Ross confirmed a split from the Supremes in "Billboard". Ross' presumed first solo recording, "Someday We'll Be Together", was eventually released as a Supremes recording and became the group's final number-one hit on the Hot 100. It was also the final number-one "Billboard" Hot 100 single of the 1960s. Ross made her final appearance with the Supremes