of this trend was the "Biblical trilogy" of William Vaughn Moody, which also illustrate the rise of religious-themed drama during the same years, as seen in the 1899 production of Ben-Hur and two 1901 adaptations of Quo Vadis. Moody, however, is best known for two prose plays, The Great Divide (1906, later adapted into three film versions) and The Faith Healer (1909), which together point the way to modern American drama in their emphasis on the emotional conflicts that lie at the heart of contemporary social conflicts. Other key playwrights from this period (in addition to continued work by Howells and Fitch) include Edward Sheldon, Charles Rann Kennedy and one of the most successful women playwrights in American drama, Rachel Crothers, whose interest in women's issues can be seen in such plays as He and She (1911). During the period between the World Wars, American drama came to maturity, thanks in large part to the works of Eugene O'Neill and of the Provincetown Players. O'Neill's experiments with theatrical form and his combination of Naturalist and Expressionist techniques inspired other playwrights to use greater freedom in their works, whether expanding the techniques of Realism, as in Susan Glaspell's Trifles, or borrowing more heavily from German Expressionism (e.g., Elmer Rice's The Adding Machine), Other distinct movements during this period include folk-drama/regionalism (Paul Green's Pulitzer-winning In Abraham's Bosom), "pageant" drama (Green's The Lost Colony, about the mysterious Roanoke Colony), and even a return to poetic drama (Maxwell Anderson's Winterset). At the same time, the economic crisis of the Great Depression led to the growth of protest drama, as seen in the Federal Theater Project's Living Newspaper productions and in the works of Clifford Odets (e.g., Waiting for Lefty), as well as moralist drama, as in Lillian Hellman's The Little Foxes and The Children's Hour. Other key figures of this era include George S. Kaufman, George Kelly, Langston Hughes, S. N. Behrman, Sidney Howard, Robert E. Sherwood, and a set of playwrights who followed O'Neill's path of philosophical searching, Philip Barry, Thornton Wilder (Our Town) and William Saroyan (The Time of Your Life). Theater criticism kept pace with the drama, such as in the work of George Jean Nathan and in the numerous books and journals on American theater that were published during this time. The stature that American drama had achieved between the Wars was cemented during the post-World War II generation, with