Category:Oliver Iron and Steel Corporation

Media in category "Oliver Iron and Steel Corporation"

The following 2 files are in this category, out of 2 total.

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  US-PA(1891) p752 PITTSBURGH, COMPLEX OF THE OLIVER IRON & STEEL COMPANY.jpg 762 × 489; 231 KB
  
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  Ois-plant-map.png 1,500 × 1,004; 2.54 MB