A couple of Supremes notes for June 30. You Keep Me Hanging On was recorded on this day in 1966. It also is the birthday of Florence Ballard, one of the original members of the group. Like so many in rock and roll, it is not a happy story, according to allmusic:
In mid-1967, as a result of what was deemed increasingly unprofessional behavior, Ballard was replaced by Cindy Birdsong (from Patti LaBelle & the Bluebelles). Ballard become one of rock’s greatest tragedies, eventually ending up on welfare, and dying in 1976.
Ballard was born in 1943 and died in 1976 at age 32. Here is more on Ballard at NNDB.