(Colorado Mining) The OPA Mining Co ~Catalog 57~ Sitting almost perfectly over the

Sitting almost perfectly over the area that would someday be West Virginia

5 X 20 (inches)

though not shown on this view

and Isabnormal Mean Annual Temperature

which really help give a perspectival shift

(Colorado Mining) The OPA Mining Co ~Catalog 57~ Sitting almost perfectly over theMap Showing Properties of The OPA Mining Co Perigo Gilpin Co. Colorado Our first encounter with a prospectus map for an area south of Rollinsville up in Gilpin county. The OPA Mining Co. (which based off the "Names of Claims: Oak, Pine Ash") and is offered at "One Cent Per Share". Situated on Perigo mountain it shows the other nearby claims as well as the grid of the small town of Rollinsville. Condition is very good, and comes with single fold