When did the author who wrote The Grapes of Wrath die?
20-Dec-68
1939
1939
1939
1939
1939
1939
1939
1939
1939
1970
1939
1970
1939
1970
1939
1970
1844
1973
1839
1975
1970
1939
1890
1932
1973
1844
1931
1974
1975
1970
1849
1968
1939
1890
1973
1932
1839
1974
1975
1970
1844
1931
1979
1968
1976
1849
1939
1973
1890
1969
1971
1974
1975
1845
1970
1932
1979
1980
1968
1976
1844
1931
1840
1973
1839
1969
1971
1974
1975
1849
1970
1939
1972
1890
1979
1980
1845
1968
1976
1932
1850
1981
1973
1844
1931
1969
1971
1974
1975
1970
1972
1979
1980
1849
1968
1976
1939
1890
1924
1921
1981
1973
1932
1969
1971
1974
1975
1970
1972
1844
1931
1979
1980
1865
1845
1840
1968
1976
1894
1978
1981
1939
1973
1890
1969
1967
1971
1974
1975
1963
1961
1970
1932
1972
1979
1850
1980
1849
1968
1976
1844
1931
1924
1921
1978
1981
1973
1969
1967
1971
1974
1975
1963
1982
1961
1970
1939
1972
1890
1979
1847
1980
1923
1865
1845
1840
1968
1964
1976
1984
1978
1981
1973
1844
1969
1967
1971
1974
1975
1963
1982
1961
1894
1970
1932
1972
1979
1850
1980
1849
1922
1939
1890
1931
1844
1924
1921
1847
1923
1865