Directed many productions for the Los Angeles Theater Center. During the 1990s, he taught acting to senior citizens at the Oasis Center in Los Angeles.
Was co-founder of the Kilpatrick-Cambridge Theater Arts School of Los Angeles in 1971.
In 1975, Cambridge founded and served as artistic director of the Cambridge Players in Los Angeles, an acting troupe that included Esther Rolle, Helen Martin and Juanita Moore.
Was a founding member of the Negro Ensemble Company in New York in the 1960s.
(1977) Played a lay preacher in the PBS documentary This Far by Faith.