File:Allegheny River Lock and Dam 1 (20180220-hpichswp-0072).jpg
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![File:Allegheny River Lock and Dam 1 (20180220-hpichswp-0072).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Allegheny_River_Lock_and_Dam_1_%2820180220-hpichswp-0072%29.jpg/750px-Allegheny_River_Lock_and_Dam_1_%2820180220-hpichswp-0072%29.jpg?20190102040837)
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Original file (4,500 × 3,600 pixels, file size: 1.5 MB, MIME type: image/jpeg)