Among Barbara's plays, one can mention: Peter Pan (in 1950, where she inherited Jean Arthur's role), Camino Real (in 1953, by Tennessee Williams, under the direction of Elia Kazan), I Am a Camera (where she took over the main role when its creator, Julie Harris, left), Bus Stop, The Dark at the Top of the Stairs, The Three Sisters, The Misanthrope, The Merchant of Venice, Measure for Measure, Plaza Suite, The Flowering Peach (directed by Martin Ritt).