<Ul> <Li> Yasushi Nagao of Mainichi, Tokyo </Li> </Ul> <Li> Yasushi Nagao of Mainichi, Tokyo </Li> <Ul> <Li> Fiction: <Ul> <Li> To Kill a Mockingbird by Harper Lee (Lippincott) </Li> </Ul> </Li> <Li> Drama: <Ul> <Li> All the Way Home by Tad Mosel (Obolensky) </Li> </Ul> </Li> <Li> History: <Ul> <Li> Between War and Peace: The Potsdam Conference by Herbert Feis (Princeton Univ . Press) </Li> </Ul> </Li> <Li> Biography or Autobiography: <Ul> <Li> Charles Sumner and the Coming of the Civil War by David Donald (Knopf) </Li> </Ul> </Li> <Li> Poetry: <Ul> <Li> Times Three: Selected Verse From Three Decades by Phyllis McGinley (Viking) </Li> </Ul> </Li> <Li> Music: <Ul> <Li> Symphony No. 7 by Walter Piston (Associated Music Publishers), first performed by the Philadelphia Orchestra on February 10, 1961, and commissioned by the Philadelphia Orchestra Association . </Li> </Ul> </Li> </Ul> <Li> Fiction: <Ul> <Li> To Kill a Mockingbird by Harper Lee (Lippincott) </Li> </Ul> </Li>

Who won the pulitzer prize for letters fiction in 1961