Map showing the Ancient Channel System and Placer Mining Claims of the Mountain House Drift Mine Sierra County, CAlifornia. Showing supposed position of the ancient auriferous lava-buried gravel channels known to exist therein. Mark N. Alling, Mining Engineer, Oakland, California. Dimensions: 35" x 24". Processing and shipping within the Continental US $60 plus a 1.5% replacement cost insurance fee. Discounts given on combined lot shipping.
Condition
Some small tears around edges. Please see photos.