The Guild began as an informal club in 1920. Ten writers met in 1933 to establish the Guild as a union under the protection of laws governing unions under consideration by Congress and eventually embodied in the Wagner Act of 1935. They included Donald Ogden Stewart, Charles Brackett, John Bright, Philip Dunne, Dorothy Parker and Howard J. Green; the union's first president. Others active in the 1930s included Lillian Hellman, Dashiell Hammett, Ogden Nash, Frances Goodrich, Albert Hackett, and Maurice Rapf. It sought to establish criteria for crediting authors for creating or contributing to a screenplay, known as "screen credits." The film studios responded by refusing to hire Guild members and forming a rival organization called the Screen Playwrights. When the Guild appealed to the National Labor Relations Board, the NLRB certified the Guild as the "exclusive bargaining agency" for screenwriters employed by 13 of 18 Hollywood studios, based on elections in which writers chose the Guild over the Screen Playwrights. The film producers acceded to the NLRB ruling in March 1939. Beginning in 1940, the Guild came under attack by the House Committee on Un-American Activities for the radical communist leanings of many of its members. The attacks escalated in 1947, when more than a dozen writers were called to testify. Hellman responded with an essay in the Screen Writer, the Guild's publication, attacking the Committee for its investigation and the film industry's owners for submitting to the Committee's intimidation. It described the Committee's hearings: In 1954, the members of the Screen Writers Guild backed the formation of a national union of a broader organization of writers working in motion pictures, television and radio, divided into two geographical bodies: Writers Guild of America, West and the Writers Guild of America, East.
Additional sources
Larry Ceplair and Steven Englund, The Inquisition in Hollywood: Politics in the Film Community, 1930-1960
David L. Goodrich, The Real Nick and Nora: Frances Goodrich and Albert Hackett, Writers of Stage and Screen Classics
Victor S. Navasky, Naming Names
Nancy Lynn Schwartz, The Hollywood Writers' War
Colin Shindler, Hollywood in Crisis: Cinema and American Society, 1929-1939