Fort Laughlin was an Civil War redoubt, built in 1863 for the defense of Pittsburgh by the employees of Jones and Laughlin Iron Works, and named for James H. Laughlin. It was also known as Fort McKinley or Fort Ormsby.[1] It was a circular earthwork on Ormsby's Hill, now part of Arlington Park on Arlington Avenue.
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40°25′07″N 79°58′30″W / 40.41861°N 79.975°W
The original article can be found at Fort Laughlin and the edit history here.