Mixed ... HAT ... 1-146, p. 653f. (1931) 594 785 ... 8 August 1931- 7 September 1931 ... Α-4
Mixed ... E. Vanderpool ... 1 196 ... 4 September 1933-28 February 1934 ... 1
Mixed ... Homer A. Thompson ... 2562 2759 ... 1 May 1938- 4 July 1938, December 1938