April 1952
Kammerer, E. Lowell
November 1953
May 1955
September 1956
January 1958
June 1959
December 1960
June 1962
January 1964
June 21 – September 20 1966
June 10 1930
Sanford, A.F.
December 15 1932
Clute, Willard N.
July 17 1934
Bryan, Norma A.
January 19 1935
September 10 1953
Mulligan, Brian O.
June 22 1938
Oneal, Claire E.
August 12 1931
November 21 1932
Kammerer, E. Lowell, Godshalk, Clarence E.
June 15 1934
November 1 1935
April 1937
August 1938
December 1939
April 1941
September 1942
June – July 1946
December 1947
June 1949
December 1950
May 1952
December 1953
June 1955
October 1956
February 1958
July 1959
January 1961