Whitlock's Mill (Maine)
Historical Light List Characteristics
| 1893 | F R. | LHB Light List (Atlantic): 1 |
| 1898-1899 | ||
| 1905 | ||
| 1908 | ||
| 1915 | F R. R9. | USLHS Light List (Atlantic): 1 |
| 1917 | USLHS Light List (Atlantic): 3 | |
| 1920 | ||
| 1927 | ||
| 1931 | ||
| 1935 | F G. G9. | |
| 1940 | F G. G11. | USCG Light List (Atlantic): 3 |
| 1943 | USCG Light List (Atlantic): 8 | |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953-1955 | F G. | USCG Light List - Vol. I-VI: 87 |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 88 | |
| 1961 | USCG Light List - Vol. I: 88 | |
| 1963 | ||
| 1964-1965 | Oc G 5s. ec 1. | |
| 1966 | Oc G 5s. G11. ec 1. | USCG Light List - Vol. I: 198 |
| 1969 | ||
| 1970-1972 | Iso G 6s. G11. | |
| 1973-1979 | Iso G 6s. G6. | |
| 1982 | ||
| 1987 | USCG Light List - Vol. I: 1165 | |
| 1990-1992 | Iso G 6s. G5. | USCG Light List - Vol. I: 960 |
| 1993-1996 | USCG Light List - Vol. I: 985 | |
| 2004 |
Historical Light List Optics and Structures
| 1893 | Tubular Lantern | N/A | 29 | Lantern suspended from a pole. | LHB Light List (Atlantic): 1 |
| 1898-1899 | |||||
| 1905 | Post Lantern | ||||
| 1908 | |||||
| 1915 | N/A | 34 | 32 | White; conical tower. | USLHS Light List (Atlantic): 1 |
| 1917 | 35 | White conical tower. | USLHS Light List (Atlantic): 3 | ||
| 1920 | |||||
| 1927 | |||||
| 1931 | 4 o | ||||
| 1935 | 4 ei | ||||
| 1940 | 4 e | N/A | USCG Light List (Atlantic): 3 | ||
| 1943 | USCG Light List (Atlantic): 8 | ||||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 87 | |||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 88 | ||||
| 1961 | USCG Light List - Vol. I: 88 | ||||
| 1963-1965 | |||||
| 1966 | USCG Light List - Vol. I: 198 | ||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | USCG Light List - Vol. I: 1165 | ||||
| 1990-1992 | USCG Light List - Vol. I: 960 | ||||
| 1993-1996 | USCG Light List - Vol. I: 985 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1893 | None | None | LHB Light List (Atlantic): 1 |
| 1898-1899 | |||
| 1905 | |||
| 1908 | |||
| 1915 | USLHS Light List (Atlantic): 1 | ||
| 1917 | USLHS Light List (Atlantic): 3 | ||
| 1920 | |||
| 1927 | |||
| 1931 | |||
| 1935 | BELL; 1 stroke every 20 sec. | ||
| 1940 | USCG Light List (Atlantic): 3 | ||
| 1943 | USCG Light List (Atlantic): 8 | ||
| 1945-1947 | |||
| 1950-1952 | |||
| 1953-1955 | BELL: 1 stroke ev 20s. | USCG Light List - Vol. I-VI: 87 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 88 | ||
| 1961 | USCG Light List - Vol. I: 88 | ||
| 1963-1965 | |||
| 1966 | USCG Light List - Vol. I: 198 | ||
| 1969-1979 | None | ||
| 1982 | |||
| 1987 | USCG Light List - Vol. I: 1165 | ||
| 1990-1992 | USCG Light List - Vol. I: 960 | ||
| 1993-1996 | USCG Light List - Vol. I: 985 | ||
| 2004 |
 |
1892 - Present (Exact location of current 1910 lighthouse. Location of original 1892 lighthouse assumed to be close.) |