Humboldt Harbor Light (CA)
Historical Light List Characteristics
| Year | Characteristic | Reference Number |
| Missing light lists prior to 1881 | ||
| 1881 | F W. W13. | LHB Light List (Dist. 12): NA |
| Missing light lists for 1882-1885 | ||
| 1886-1888 | F W. W12.75. | LHB Light List (Dist. 12): NA |
| Missing light lists for 1889-1891 | ||
| 1892 | F W. W13.75. | LHB Light List (Dist. 12-13): 859 |
Historical Light List Optics and Structures
| Year | Optic | Tower Height | Focal Plane | Description | Reference Number |
| Missing light lists prior to 1881 | |||||
| 1881 | 4th | 45 | NA | White; dome of lantern and balustrade, red. Conical tower on white dwelling. | LHB Light List (Dist. 12): NA |
| Missing light lists for 1882-1885 | |||||
| 1886 | NA | 45 | NA | White; dome of lantern and balustrade, red. Conical tower on white dwelling. | LHB Light List (Dist. 12): NA |
| 1887-1888 | White; dome of lantern and balustrade, black. Conical tower on white dwelling. | ||||
| Missing light lists for 1889-1891 | |||||
| 1892 | 4th | 45 | NA | Conical white tower, rising from white dwelling; lantern, black. | LHB Light List (Dist. 12-13): 859 |
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1856-1892 |