 |  |  |  | |||
| 1940 George MacFarland | 1941 Henry T. Chamberlain | 1942 Herbert F. Taggert | 1943 A. C. Littleton | |||
 |  |  |  | |||
| 1944 Carmen G. Blough | 1945 Harvey G. Meyer | 1946 Eric L. Kohler | 1947 Hermann C. Miller | |||
 |  | |||||
| 1948 Thomas W. Leland | 1949 Robert L. Dixon |
| | | | |||
| 1940 George MacFarland | 1941 Henry T. Chamberlain | 1942 Herbert F. Taggert | 1943 A. C. Littleton | |||
| | | | |||
| 1944 Carmen G. Blough | 1945 Harvey G. Meyer | 1946 Eric L. Kohler | 1947 Hermann C. Miller | |||
| | |||||
| 1948 Thomas W. Leland | 1949 Robert L. Dixon |