Period 6

Events

July 28, 1914 - 1918
1915
May 7, 1915
1917
1918 - 1919
November 11, 1918
January 25 1919
June 28, 1919
1920
1921 - 1931
1921
1926
1929 - 1941
1934
1939 - 1945
1939
December 7 1941
1945 - 1991
March 1947
April 4, 1949
1950 - 1953
May 14 1955
1957
1959 - 1975
1961 - 1989
October 1962
1969
1990
2001