Spatial Coverage
- Clear Creek County (Colo.)1
- Comstock Lode1
- Comstock Lode (Nev.)1
- Cripple Creek.1
- Esmeralda County1
- Esmeralda County (Nev.)1
- Goldfield Mining District1
- Goldfield Mining District (Nev.)1
- Lake County1
- Lake County (Colo.)1
- Lewis and Clark County.1
- Mono Lake Region (Calif.)1
- Montana, Southwestern.1
- Mother Lode1
- Mother Lode (Calif.)1
- Mother Lode Region1
- Mother Lode Region (Calif.)1
- Mother Lode.1
- Placer County1
- Placer County (Calif.)1
