The House Committee on Un-American Activities (generally known as HUAC) also investigated communism within Hollywood, calling a number of playwrights, directors and actors known for left-wing views to testify. Although some of these, including film director Elia Kazan, testified for the committee to avoid prison sentences, the Hollywood Ten, a group of entertainers, refused to testify and were convicted of contempt and sentenced to up to one year in prison. Over three hundred other entertainers were placed on a blacklist for possible communist views and were thus forbidden to work for major Hollywood studios (many of these were writers who worked under pseudonyms at the time, including Dalton Trumbo and Michael Wilson). Arthur Miller was one of these blacklisted. The blacklist prevented these men from receiving screen credit during this time, until actor Kirk Douglas pushed for Trumbo to receive screen credit for his adaptation of Spartacus for Stanley Kubrick in 1960.