Report on the Graham and Eliza Jane group, the Lilly Copper King group, the Russell Hill group, the Cleveland: all in the Gregory, Enterprise, Lake, and Pleasant Valley, Gilpin County, Colo.
AuthorBolander, G. E.
KeywordsMines and mineral resources -- Colorado -- Gilpin County
Ores -- Colorado -- Gilpin County
Mining claims -- Colorado -- Gilpin County
Gregory Mining District (Colo.)