File:Pittsburgh area rail map 1921.jpg
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![File:Pittsburgh area rail map 1921.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Pittsburgh_area_rail_map_1921.jpg/800px-Pittsburgh_area_rail_map_1921.jpg?20200211034707)
Size of this preview: 800 × 403 pixels. Other resolutions: 320 × 161 pixels | 640 × 322 pixels | 1,024 × 516 pixels | 1,280 × 644 pixels | 2,560 × 1,289 pixels | 10,735 × 5,405 pixels.
Original file (10,735 × 5,405 pixels, file size: 7.52 MB, MIME type: image/jpeg)