Well Earned Stroke Fest

For it's 250Th anniversary, I guess the Heinz History Center produced this endless but true compilation of things done in Pittsburgh first.

I think there is at least one stretch with claim to have been the birthplace of the ironclad warship.

"The ironclad was developed as a result of the vulnerability of wooden warships to explosive or incendiary shells. The first ironclad battleship, La Gloire, was launched by the French Navy in 1859;[2] she prompted the British Royal Navy to start building ironclads. After the first clashes of ironclads took place during the American Civil War, it became clear that the ironclad had replaced the unarmored line-of-battle ship as the most powerful warship afloat.[3]"

Still, Pittsburgh had the first major integrated steel mill, was the birthplace of the Aluminum industry and innovations like the railroad air brake. Pittsburghers also began the modern oil industry; the national library system was started here as well as the nuclear power industry.