Word Is Out (1977)

Director: Rob Epstein, Nancy Adair, Andrew Brown, Peter Adair, Lucy Massie Phenix, Veronica Selver
Cast: Donald Hackett, Elsa Gidlow, Harry Hay, John Burnside, Pam Jackson, Pat Bond, Rusty Millington, Sally M. Gearhart

Synopsis:

More than two dozen men and women of various backgrounds, ages, and races talk to the camera about being gay or lesbian. Their stories are arranged in loose chronology: early years, fitting in (which for some meant marriage), coming out, establishing adult identities, and reflecting on how things have changed and how things should be.