Western hemisphere mine. Pitkin district. Colorado Mentioned. R. M. News. Nov. 29, 1879. p.2 c.1 Interest transfer; Armstrong creek. R. N. News. Mar. 11, 1880. p.8 c.5 Opened. R. M. News. Apr. 10, 1880. p.8 c.4 Interest transfer, Armstrong gulch. R. PA. News. May 7, 1880. p.6 c.1 Transfer; value. R. M. News. May 12, 1880. p.3 c.1 Re-located under name of Oracle. R.M.News.Apr.10,1882. p.7 c.1 Character of ore ; assay ; formerly known, Oracle mine. R.M.News.Apr.17,1882. p,6 c.5