- Callahan Mining District (Scott River Mining District)
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. O’Brien, J.C. (1947), Mines and mineral resources of Siskiyou County: California Journal of Mines and Geology, California Division Mines (Report 43): 43(4): 424 Van Nostrand Reinholt Press: 228. |