Eugene O'Neill wrote three Pulitzer Prize-winning plays during the 1920s: Beyond the Horizon (1920), Anna Christie (1922), and Strange Interlude (1928). During the 1930s, however, O'Neill's popularity began to fade. Subjected to closer scrutiny be a new generation of critics, obscurity began to settle on America's first great playwright and deepened more and more until his death in 1953. Ironically, it was during these dark years that O'Neill's real development began. Maturing in silence, he developed a profound artistic honesty which produced several genuine masterpieces of the modern theatre, including the autobiographical play Long Day's Journey Into Night, for which he won one more Pulitzer Prize (posthumously) in 1957.