VANDEN BOSCH T          1886-1888

EININK B H                      1893-1895

NOORDEWIER J              1896-1907

DE BEER D                     1908-1913

WESTENBERG G            1914-1921

BOUWSMA J O               1921-1927

DUSSELJEE A                1928-1940

VANDER WERP M J        1940-1944

ESSENBURG B               1945-1961

JONGSMA A H                1962-1967

VANDER WEIDE P          1969-1980