Editing History of Pittsburgh (section)

===Carnegie===
[[Andrew Carnegie]], an immigrant from Scotland and a former [[Pennsylvania Railroad]] executive turned steel magnate, founded the [[Carnegie Steel Company]]. He proceeded to play a key role in the development of the U.S. steel industry. He became a philanthropist: in 1890, he established the first [[Carnegie Library]], in a program to establish libraries in numerous cities and towns by the incentive of matching funds. In 1895, he founded the [[Carnegie Museums of Pittsburgh|Carnegie Institute]]. In 1901, as the [[U.S. Steel]] Corporation formed, he sold his mills to [[J.P. Morgan]] for $250 million, making him one of the world's richest men. Carnegie once wrote that a man who dies rich, dies disgraced.<ref>{{cite journal |author1=Carnegie, Andrew |url=http://digital.library.cornell.edu/cgi/t/text/text-idx?c=nora;cc=;view=toc;subview=short;idno=nora0148-6 |archive-url=https://archive.today/20120709182150/http://digital.library.cornell.edu/cgi/t/text/text-idx?c=nora;cc=;view=toc;subview=short;idno=nora0148-6 |url-status=dead |archive-date=July 9, 2012 |title=The North American Review Volume 0148 Issue 391|journal=The North American Review  |access-date=February 10, 2014}}</ref> He devoted the rest of his life to public service, establishing libraries, trusts, and foundations. In Pittsburgh, he founded the [[Carnegie Institute of Technology]] (now [[Carnegie Mellon University]]) and the [[Carnegie Museums of Pittsburgh]].<ref name="Galloway"/>

The third (and present) [[Allegheny County Courthouse]] and Jail was completed in 1886. In 1890, trolleys began operations.<ref name="WQED"/> In 1907, [[Pittsburgh]] annexed [[Allegheny, Pennsylvania|Allegheny City]], which is now known as the [[North Side (Pittsburgh)|North Side]].<ref name="WQED"/>

[[File:Photograph of a Vat of Molten Pig Iron Being Poured into an Open Hearth Furnace at the Jones and Laughlin Steel Company, Pittsburgh, Pennsy - NARA - 535922 (high contrast).jpg|thumb|right|300px|{{center|Steelworker watching molten steel being poured into a mold, J&L Steel, Pittsburgh, May 1942.}}]]