Guard Island Light (AK)
Historical Light List Characteristics
| Year | Characteristic | Reference Number |
| Missing light lists prior to 1906 | ||
| 1906 | F WR. Red sector between W 1/8 S and NW by W 3/16 W. | LHB Light List (Dist. 12-13): 245 |
| Missing light lists for 1907-1910 | ||
| 1911 | F WR. R299°-331.5°(32.5°), W331.5°-299°(327.5°). | USLHS Light List (16th-18th): NA |
| Missing light lists for 1912-1913 | ||
| 1914 | Fl(2) WR 6s. W10, R7. fl 0.5, ec 1, fl 0.5, ec 4. R299°-332°(33°), W332°-299°(327°). | USLHS Light List (Pacific): 552 |
| Missing light lists for 1915-1929 | ||
| 1930-1933 | Fl(2) W 6s. W9. fl 0.5, ec 1, fl 0.5, ec 4. | USLHS Light List (Pacific): 1111 |
| Missing light lists for 1934-1944 | ||
| 1945 | Fl(2) W 6s. W14. fl 0.5, ec 1, fl 0.5, ec 4. | USCG Light List (Pacific): 2125 |
| Missing light lists for 1946-1949 | ||
| 1950-1951 | Fl(2) W 6s. W14. fl 1, ec 1, fl 1, ec 3. | USCG Light List (Pacific): 2125 |
| 1952-1958 | USCG Light List - Vol. I-V: 2349 | |
| 1959-1960 | Fl W 2.5s. W14. fl 0.1. | |
| 1961-1963 | USCG Light List - Vol. III: 2349 | |
| 1964-1969 | Fl W 2.5s. W14. | USCG Light List - Vol. III: 2964 |
| 1970-1972 | Fl W 5s. W14. | |
| 1973-1974 | Fl W 5s. W23. | |
| 1975-1984 | USCG Light List - Vol. III: 3012 | |
| 1985 | USCG Light List - Vol. VI: 3012 | |
| 1986 | USCG Light List - Vol. VI: 22300 | |
| 1988 | ||
| 1990 | ||
| Missing light lists for 1991-2003 | ||
| 2004 | Fl W 10s. W17. | USCG Light List - Vol. VI: 22300 |
Historical Light List Optics and Structures
| Year | Optic | Tower Height | Focal Plane | Description | Reference Number |
| Missing light lists prior to 1906 | |||||
| 1906 | Lens Lantern | 34 | 79 | White, square, pyramidal, wooden tower; octagonal lantern with black roof. | LHB Light List (Dist. 12-13): 245 |
| Missing light lists for 1907-1910 | |||||
| 1911 | Lens Lantern | NA | NA | White. Square, pyramidal wooden tower. | USLHS Light List (16th-18th): NA |
| Missing light lists for 1912-1913 | |||||
| 1914 | NA | 34 | 79 | White; square pyramidal wooden tower. | USLHS Light List (Pacific): 552 |
| Missing light lists for 1915-1929 | |||||
| 1930-1933 | 300 mm a | 30 | 74 | White square tower on rectangular building. | USLHS Light List (Pacific): 1111 |
| Missing light lists for 1934-1944 | |||||
| 1945 | 375 mm e | 30 | 74 | White square tower on rectangular building. | USCG Light List (Pacific): 2125 |
| Missing light lists for 1946-1949 | |||||
| 1950-1951 | 4 e | 30 | 74 | White square tower on rectangular building. | USCG Light List (Pacific): 2125 |
| 1952-1960 | NA | USCG Light List - Vol. I-V: 2349 | |||
| 1961-1963 | USCG Light List - Vol. III: 2349 | ||||
| 1964-1970 | USCG Light List - Vol. III: 2964 | ||||
| 1971-1974 | NA | ||||
| 1975-1977 | USCG Light List - Vol. III: 3012 | ||||
| 1978-1981 | 74 | ||||
| 1982-1984 | NA | ||||
| 1985 | USCG Light List - Vol. VI: 3012 | ||||
| 1986 | USCG Light List - Vol. VI: 22300 | ||||
| 1988 | |||||
| 1990 | |||||
| Missing light lists for 1991-2003 | |||||
| 2004 | NA | NA | 74 | White square tower on rectangular building. | USCG Light List - Vol. VI: 22300 |
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1904-Present (Assumed the original 1904 lighthouse was located very close to the position of the current 1924 lighthouse.) |