This is from This Day in Music.com entry for July 10, 1987:
Producer and record company executive John Hammond died. He brought Stevie Ray Vaughan, Bob Dylan, Aretha Franklin, Leonard Cohen and Bruce Springsteen to Columbia Records. Hammond also worked as a producer with Bessie Smith, Billie Holiday, Benny Goodman and Count Basie.
From Bessie Smith to Bruce Springsteen.
There is more, courtesy of Wikipedia. The site says that Hammond also was involved with Charlie Christian, Teddy Wilson, Big Joe Turner, Pete Seeger, Babtunde Olatunji, George Benson, Freddy Green, Arthur Russell and Asha Puthli.
Of course, as a record producer he would have worked with many performers. The breathe of Hammond’s influence and his longevity are amazing, however.
Teddy Wilson plays Avalon in Austria in 1976.