| 1762 | Charles Harlacker |
| 1783 | Carl Harlacker |
| 1789 | Samuel Harlacker |
| 1811 | Samuel Harlacker estate |
| 1817 | Samuel Harlacker |
| 1864 | John Graver |
| 1875 | Samuel Royer |
| 1883 | John Stoll |
| 1899 | George Buch |
| c1926 | Operations ceased |
| 1969 | Reconstructed as a barn |
| 1991 | David & Carolyn Myer |
| 2013 | David & Edna Glick |
In 2022, the building is being remodeled into what appears to be a workshop. The mill is located at 130 Royer Road, Ephrata, PA.
| Built | 1762 |
| Structure | 2.5 Story Stone/Frame |
| Size | 30×50 feet |
| Water Source | Cocalico Creek |
| Township | Ephrata |
| Headrace | 300 feet |
| Tailrace | 200 feet |
