Brinnin, John Malcolm.The Third Rose: Gertrude Stein and Her World. Little, Reprint, Addison-Wesley, 1959. 1987. Fills in gaps that Stein left in her own version; includes numerous revealing quotes.
Simon, Linda, ed.Gertrude Stein Remembered. University of Nebraska Press, 1994. Reminiscences by Gertrude Stein's friends and associates provide an intimate portraits of Stein at every stage of her career.
Stendhal, Renate, ed.Gertrude Stein in Words and Pictures. Algonquin, 1994. Recently uncovered photographs and little-known texts join classic texts and photographs to form a documentary biography.
Wagner-Martin, Linda.Strangers: Gertrude Stein and Her Family. Rutgers University Press, 1995. Comprehensive biography delves into Stein's troubled family relationships.