<Tr> <Th> Genre </Th> <Td> Drama </Td> </Tr> <Tr> <Th> Setting </Th> <Td> The summer home of the Tyrones, August 1912 </Td> </Tr> <P> Long Day's Journey into Night is a drama play in four acts written by American playwright Eugene O'Neill in 1941--42 but first published in 1956 . The play is widely considered to be his magnum opus and one of the finest American plays of the 20th century . It premiered in Sweden in February 1956 and then opened on Broadway in November 1956, winning the Tony Award for Best Play . </P> <P> O'Neill posthumously received the 1957 Pulitzer Prize for Drama for Long Day's Journey into Night . The work concerns the Tyrone family--consisting of parents James and Mary and their sons Edmund and Jamie . Mary is addicted to morphine and Edmund is ill with tuberculosis . The "Long Day" refers to the setting of the play, which takes place during one day . The play is semi-autobiographical . </P>

Who wrote long day's journey into night