[Engineers' Report and Two Blueprints for Silver Star Mine, Near Sun Valley, Idaho]
San Francisco: 1925. 9pp., plus two blueprint maps, each 18 x 39 inches. Light soiling. Minor losses at fold points of blueprints. A detailed engineering report on assay sampling at the Silver Star Mine in Central Idaho, west of Sun Valley. The typed letter, dated November 16, 1925, reports disappointing..... More