IB20thHHAH.p1

Events

November 1, 1952
October 4, 1957
October 16, 1962 - October 28, 1962
August 28, 1963
November 22, 1963
July 23, 1967 - July 28, 1967
March 16, 1968
April 4, 1968
July 16, 1969 - July 24, 1969
April 17, 1975 - January 7, 1979