1. | James King | under King | June 11 1928 - June 18 1930 |
2. | James Ralston | under King | June 19 1930 - August 7 1930 |
3. | Murray MacLaren | under Bennett | August 7 1930 - November 16 1934 |
4. | Donald Matheson Sutherland | under Bennett | November 17 1934 - October 23 1935 |
5. | Charles Power | under King | October 24 1935 - September 18 1939 |
6. | Ian Alistair Mackenzie | under King | September 19 1939 - July 4 1944 |
See other lists of incumbents