Among the most influential early film women were Mary Pickford and Mae West. In 1909, when she landed her first movie job, Pickford was just scraping by; in 1915, she was one of the world’s best-known women. Despite her winsome on-screen persona, she became the first actress to produce her own films, a cofounder of United Artists and a major shaper of film acting. In Pickford (Kentucky. $25), a knockout of a biography on sale next month, Eileen Whitfield shows a rare gift for making sense of acting styles, and for bringing to life the world of silent movies.

Mae West was Pickford’s on-screen opposite, a sashaying cartoon of a woman of the world, appraising (and enjoying) men with self-mocking relish. Behind the scenes, she was Pickford’s match in tenacity and nerve; her producers never thought they were making anything but ““Mae West movies.’’ In her zesty Becoming Mae West (Farrar, Straus and Giroux. $30), Emily Wortis Leider points out that by the time she barreled into movies, West had 35 years of theater and vaudeville behind her. She liked prizefighters, cross-dressers and stealing credit from collaborators. She wrote a lot of great comic lines (““I like restraint - if it doesn’t go too far’’) and gave them all to herself. But by the mid-’30s, Pickford had stopped acting, the business was aspiring to respectability and West’s freedom was curtailed. Since then, few actresses have managed to wield their measure of creative power.