Her other credits on Broadway include Arthur Miller's "The Creation of the World and Other Business" in which she played Eve, a one-woman play by William Luce based on the life of Lillian Hellman and a production of "Macbeth" with Christopher Plummer as Macbeth and Glenda Jackson as Lady Macbeth under Caldwell's direction. Caldwell directed, Off-Broadway, a two-woman play, created by Eileen Atkins, "Vita and Virginia", based on the letters between Virginia Woolf and Vita Sackville-West. Atkins played Virginia and Vanessa Redgrave played Vita. Caldwell directed the Broadway production of "Othello" in the late 1970s with James Earl Jones, Christopher Plummer, and Dianne Wiest. She helmed the American Shakespeare Theatre in Stratford, Connecticut for two limited-run seasons as its Artistic Director in the mid-1980s.