|
USA | |
- Jackson-Plymouth Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Lincoln Consolidated Mine (Lincoln Mine; Wildman Mine; Mahoney Mine; South Mahoney Mine; Steward Mine; Belmont Mine; Wildman-Mahoney Mine)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Norman King |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Heyl, G.R., Staatz, M.H. (1946) Open-File Report Vol. 1946 (46-24), Grayhouse area, Amador County, California. US Geological Survey |
| www.caverntours.com (n.d.) http://www.caverntours.com/BlackRt.htm |
| Emmons, S. F., Becker, G. F. (1885) Statistics and Technology of the Precious Metals. Bureau of the Census. |