Original old vintage mining trade magazine ad for JOHN A ROEBLING SONS COMPANY. Main office and factory was located in Trenton, NJ.  The Culmination of over half a Century of Experience in the manufacture of wire rope was the production about twenty years ago, by the Roebling Company, of a steel now known the world over as Blue Center Steel.  Old 1928 dated coal mining industry advertisement.

Approximate page size  9 x 12 inches.