The Supremes performing on "The Ed Sullivan Show" on December 21, 1969. The Supremes without Ross made their final appearance altogether on "Ed Sullivan" on February 15, 1970. Diana Ross & the Supremes gave their final performance on January 14, 1970 at the Frontier Hotel in Las Vegas. At the final performance, the replacement for Diana Ross, Jean Terrell, was introduced. According to Mary Wilson, after this performance, Berry Gordy wanted to replace Terrell with Syreeta Wright. Wilson refused, leading to Gordy stating that he was washing his hands of the group thereafter. This claim is also made by Mark Ribowsky. After
Diana Ross & the Supremes Join The Temptations single for both Diana Ross and The Supremes and the Temptations. It was produced by Frank Wilson and Nick Ashford - without his songwriting partner-wife Valerie Simpson. "Diana Ross & the Supremes Join the Temptations" marks the first on-record appearance of new Temptations lead singer Dennis Edwards, who was brought in as David Ruffin's replacement in July 1968. This was an unbelievably successful time for Motown. During December 1968, the label had 5 of the Top 10 singles in one week including "Love Child" by Diana Ross and The Supremes, "Cloud Nine by the Temptations, "I Heard it Through the