This is a coincidence -- yesterday I put a new hickory handle on the 6# Iron City sledge I picked up recently. It looked good, and they only wanted $3 for it, so it came home.
Iron City Tool Works is a venerable company, founded by German immigrants in 1854, in Pittsburg, the Iron City (that gave its name to the beer, too).
They produced blacksmith tools, hammers, hoes, picks, rail road tools, and vises. Warren Tool Corp bought Iron City in 1958, and apparently retained the Iron City name.
I think I have a couple more Iron City tools, blacksmith stuff. Good tools.