| Years Served | Director | % Correct |
|---|---|---|
| 1891 - 1894 | Andrew L. Drummond | 100%
|
| 1999 - 2003 | Brian L. Stafford | 100%
|
| 1993 - 1997 | Eljay B. Bowron | 100%
|
| 1937 - 1946 | Frank J. Wilson | 100%
|
| 1869 - 1874 | Hiram C. Whitley | 100%
|
| 1973 - 1981 | H. Stuart Knight | 100%
|
| 1876 - 1888 | James Brooks | 100%
|
| 1946 - 1948 | James J. Maloney | 100%
|
| 1961 - 1973 | James Joseph Rowley | 100%
|
| 2019 - 2022 | James M. Murray | 100%
|
| 1992 - 1993 | John Magaw | 100%
|
| 1981 - 1992 | John R. Simpson | 100%
|
| 1888 - 1890 | John S. Bell | 100%
|
| 1898 - 1911 | John Wilkie | 100%
|
| 2014 - 2017 | Joseph Clancy | 100%
|
| 2013 - 2014 | Julia Pierson | 100%
|
| 2022 - 2024 | Kimberly Cheatle | 100%
|
| 1997 - 1999 | Lewis C. Merletti | 100%
|
| 2006 - 2013 | Mark J. Sullivan | 100%
|
| 2017 - 2019 | Randolph Alles | 100%
|
| (Acting) 2024 - 2025 | Ronald L. Rowe Jr. | 100%
|
| 2025 - Present | Sean M. Curran | 100%
|
| 1948 - 1961 | U. E. Baughman | 100%
|
| 1917 - 1936 | William H. Moran | 100%
|
| (Acting) 2017 | William J. Callahan | 100%
|
| 1912 - 1917 | William J. Flynn | 100%
|
| 1894 - 1898 | William P. Hazen | 100%
|
| 1865 - 1869 | William P. Wood | 100%
|
| 2003 - 2006 | W. Ralph Basham | 100%
|