| Sources |
- [S6505] Ω Place Record: Centerville, Humboldt CA, Place Rec Id [P8322].
- [S14139] Ω Place Record: Pacific Twp., Port Kenyon and Bear River Precincts (excl. Ferndale town), Humboldt CA, Place Rec Id [P18477].
- [S14126] Ω Place Record: Fortuna Judicial Township, Humboldt CA, Place Rec Id [P18458].
- [S14138] Ω Place Record: Springville, Humboldt CA, Place Rec Id [P18474].
- [S6492] Ω Place Record: Ferndale Cemetery, Ferndale, Humboldt CA, Place Rec Id [P8308].
- [S6498] Ω Place Record: Humboldt CA, Place Rec Id [P8314].
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