1885 Guggenheim, B., Bookkeeper, AY & Minnie Mines, Iron Hill
1887 Guggenheim, Benjamin, Mining, r. 134 W 6
1888 Guggenheim, William, r. 31 Delaware Block
1889 Guggenheim, Meyer, AY & Minnie Mines, office at mines,
Iron Hill
1890 Guggenheim, Meyer, AY & Minnie Mines, office at mines,
Iron Hill
1891 Guggenheim, Meyer, AY & Minnie Mines, office, at mines,
Iron Hill
1892 Guggenheim, Meyer, AY & Minnie Mines, office, at mines,
Iron Hill
Benjamin in Leadville 83-88