The Supremes
The Supremes were the best-charting female pop group of all time.
https://www.allmusic.com/artist/the-supremes-mn0000477875
1967 interview at Monterey International Pop Music Festival: https://digital.library.unt.edu/search/?fq=str_title_serial%3A%22The+Pop+Chronicles+%28John+Gilliland+Collection%29%22&sort=date_a&start=25
Supremes on Ed Sullivan: https://youtu.be/o_cBv3wzcGs