| Arizona Outback | | |
|---|
| Gold Prospectors of America (GPAA) | | |
| Havasu Gold Seekers | | |
| International California Mining Journal…ICMJ | | |
| Mindat Mineral and Locality Database | | |
| Montana Bureau of Mines and Geology | | |
| Montana Geologic Map Data (USGS) | | |
| MetalDetector | | |
| Montana Mining Association | | |
| Nevada Bureau of Mines and Geology | | |
| American Exploration & Mining Association | | |
| Nortwest Montana Gold Prospectors | | |
| Nugget Shooter | | |
| Nugget Wranglers | | |
| Public Lands for the People…PLP | | |
| San Francisco and the 1849 Gold Rush |