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1887 Geological Map of the Clear … Geologic Atlas Geological Map of the Clear … |
1887 Geological Map of the Sulphu … Geologic Atlas Geological Map of the Sulphu … |
1887 Geological Map of the New Id … Geologic Atlas Geological Map of the New Id … |
1887 Geological Map of the New Al … Geologic Atlas Geological Map of the New Al … |
1887 Ore-Bodies and Topography of … Geologic Atlas Ore-Bodies and Topography of … |
1887 Plan of the New Almaden Mine … Geologic Atlas Plan of the New Almaden Mine … |
1887 Longitudinal Section of the … Geologic Atlas Longitudinal Section of the … |