Negro Flat, Siskiyou County, California
Negro Flat was one of the largest gold producers in Trinity County in 1850, along with Gullion's Bar, Bestville, and Sawyers Bar. In 1851, it became part of Klamath County. In 1874, its site became part of Siskiyou County, when Klamath County was finally abolished and divided between Siskiyou and Humboldt counties.
- Hubert Howe Bancroft, History of California, Vol. VI, 1848-1859, The History company, San Francisco, 1888, p.370
- Theodore Henry Hittell, History of California, Volume 3, N. J. Stone, San Francisco, 1897, p.140
- The Works of Hubert Howe Bancroft: Vol. XXIII History of California, vol VI, 1848-1859, The History Company, San Francisco, 1888, p. 370, Note.