1921 – 1985
December 23 1927
Godshalk, Clarence E.
1940s
Watts, May Theilgaard
May 10 1944
May 15 1944
Morton, Sterling
January 23 1948
January 28 1952
February 22 1952
Kammerer, E. Lowell
November 4 1953
Olson, Jerry S.
April 26 1956
September 28 1959
Piedras, F.
October 19 1959