| 1960–1961 | Per Sjögren |
| 1959–1960 | Eric Bliss |
| 1958–1959 | Fritz (Frederic) Staab |
| 1956–1957 | Peter Myers |
| 1955–1956 | WALTER HEINZ † |
| 1954–1955 | WALTER HEINZ † |
| 1953–1954 | Hubert Praat |
| 1948–1949 | R.H. Bates |
| 1960–1961 | Per Sjögren |
| 1959–1960 | Eric Bliss |
| 1958–1959 | Fritz (Frederic) Staab |
| 1956–1957 | Peter Myers |
| 1955–1956 | WALTER HEINZ † |
| 1954–1955 | WALTER HEINZ † |
| 1953–1954 | Hubert Praat |
| 1948–1949 | R.H. Bates |