POMEROY'S ADVANCE THOUGHT, New York, October, 1887  This paper has many articles on mining and worldwide news. This is the volume 1, number 3 issue.
It was really published to promote M. M. Pomeroy's Atlantic-Pacific Railroad Tunnel Company, which was struggling to make enough money to complete the railroad tunnel through the Continental Divide west of Silver Plume, Colorado. Although the tunnel was started, it was never completed. 
Complete in 32 pages, 10 3/4 by 14 1/4 inches, loss to an upper corner of the back leaf, some damp staining.