Galena from selected localities.
USA | |
| USGS OFR 1966-87 |
Minerals of Colorado (1997) E.B. Eckel | |
USGS OFR 1966-87; Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office |