Featured in this lot is this large, original official map of Cascade County, Montana from 1890 done by O. C. Mortson. The maps title is, "Official Map Of Cascade County, Montana: Also The Adjacent Mining Regions Of The Belt Mountains". The map is highly detailed and shows the area surrounding Great Falls showing various other towns, mining locations, mountain ranges, rivers and lakes. Surrounding the map are write ups about the surrounding towns, mining locations, railroads in the area, statistics of the area and a roster of County Officers at the time. The legend is located in the bottom left hand corner of the map and shows color coordinated lines indicating locations such as: County Boundaries, Roads, Railways, Gold Mines, Silver Mines, Copper Mines and Gold Placers. The map shows good condition for its old age with holes in the bottom left hand corner, bottom right hand corner and top middle of the map with slight tears on the sides, but is still readable. The map measures 30 3/4" L x 44" W.