I'm a Trans Woman, but Please Stop Asking Me About My Genitalia
Playboy Magazine December 1977 vol.24, no.12
Beastly Behaviour: Barbara Carrera, Playboy And The Island Of Dr Moreau
Her mother, Florencia Carrera, was of Nicaraguan, European, and Native ancestry, and her father, Louis Kingsbury, was a employee of the American embassy in Nicaragua.
Some sources give her birth year as 1947 or 1951, but most list 1945.