BBC News: Actress Rachel Kempson dies: Actress Rachel Kempson, mother of actors Lynn, Vanessa and Corin Redgrave, dies aged 92.
IMDb: Rachel Kempson: Biography and filmography.
Kempson, Rachel: Biography from daughter Lynn's website.
National Portrait Gallery: Rachel Kempson: Portraits.
Theatre, Musicals and Actors Web: Rachel Kempson: Biography.