Comstock Lode Longitudinal Vertical Projection Nevada 3/3 - 23x26
More Old Mining Maps Area shown on this map.
COMSTOCK LODE LONGITUDINAL VERTICAL PROJECTION NO
an Explanation that small figues in brackets indicate the depth below the datum point. A round spot at the intersection of the horizontal and vertical black lines shows that the shaft and drift are connected, and that ore bodies extracted are shaded
-, Nevada United States