1970s
March 21 – June 20 1970
June 21 – September 20 1972
Armstrong, Patricia K.
December 21 1972 – March 20 1973
June 21 – September 20 1975
June 21 – September 20 1977
March 21 – June 20 1979
June 21 – September 20 1979
June 21 – September 20 1981
June 21 – September 20 1983
June 21 – September 20 1985
March 27 1999
1970
June 1970
2012
September 11 1987
July 3 1975