Category:Ohio River in the 20th century

Subcategories

This category has the following 2 subcategories, out of 2 total.

Media in category "Ohio River in the 20th century"

The following 6 files are in this category, out of 6 total.

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  Average annual stream flow in inches, 1931-60, southwest Ohio River basin study area, Ohio LOC 81691042.jpg 3,450 × 5,875; 1.5 MB
  
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  BLACK WATER BEING DISCHARGED INTO THE OHIO RIVER FROM THE COKE AND BY PRODUCTS AREA OF THE JONES AND LAUGHLIN STEEL... - NARA - 557247.jpg 2,010 × 3,000; 728 KB
  
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  CAMPING ALONG THE BANKS OF THE OHIO RIVER - NARA - 543943.jpg 3,000 × 2,028; 1.34 MB
  
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  CAMPING ALONG THE OHIO RIVER - NARA - 543889.jpg 3,000 × 2,023; 1.4 MB
  
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  Connecting Railroad Bridge Over Ohio River Back Channel (20180220-hpichswp-0173).png 4,500 × 3,600; 7.33 MB
  
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  The wilderness trail; or, The ventures and adventures of the Pennsylvania traders on the Allegheny path, with some new annals of the Old West, and the records of some strong men and some bad ones (14594814258).jpg 2,008 × 1,232; 350 KB