| Results |
| Name |
Year of Publication |
| Gilbert & Williamson Mfg. Co. | 1898 |
| William Williamson, residence of, Henrietta | 1877 |
| Williamson, George Lumsden | 1928 |
| Williamson, J. A. | 1898 |
| Williamson, E. R. | 1891 |
| Williamson, Robert R. | 1911 |
| Williamson, Herbert Charles | 1928 |
| Williamson, Robert R. | 1903 |
| Williamson, Robert R. | 1911 |
| Williamson, Herbert Charles | 1939 |
| Williamson, Herbert Charles | 1959 |
| Williamson, Robert R. | 1903 |
| Williamson, Charles | 1989 |
| Williamson, William A. | 1895 |
| Williamson, William A. | 1908 |
| Williamson & Higbie | 1888 |
| Williamson & Higbie | 1884 |
| Williamson and Higbie, 9 Exchange Street | 1888 |
