Mary Wilson and Florence Ballard: background vocals on "Love Is Here and Now You're Gone", "In and Out of Love", and "The Happening"
Maxine and Julia Waters: background vocals, "Someday We'll Be Together"
The Andantes: background vocals on "Love Child", "Forever Came Today", "In and Out of Love", "I'm Livin' in Shame", "No Matter What Sign You Are", "The Composer"
Johnny Bristol: producer and background vocals on "Someday We'll Be Together"
Brian Holland and Lamont Dozier: producers, "Reflections", "Love Is Here and Now You're Gone", "Forever Came Today", "In and Out of Love", "The Happening"
The Funk Brothers: instrumentation on all tracks save for "Love Is Here and Now You're Gone" and "In and Out of Love".
Chronology(The band's name history: The Primettes 1959–1961 / The Supremes 1961–1967 / Diana Ross & The Supremes 1967–1970 / The Supremes 1970 / Diana Ross & The Supremes 1970 / The Supremes 1970–)