Editing Leechburg, Pennsylvania (section)

== Notable Events ==
* 1829: First canal boats pass through Leechburg.<ref name="CanalHistory" />
* 1850: Borough of Leechburg incorporated.<ref name="Beers1914" />
* 1872: Tin plate production begins at Leechburg Rolling Mill.<ref name="Beers1914" />
* 1874: First use of natural gas in industrial steelmaking.<ref name="LAMHS" />
* 1889: Devastating fire leads to formation of volunteer fire company.<ref name="Centennial1950" />
* 1900: Leechburg mill becomes part of U.S. Steel.
* 1950: Centennial celebrated with parades and historical exhibits.<ref name="Centennial1950" />
* 2005–2016: Closure of major Allegheny Ludlum/ATI plants.<ref name="Trib2025" />
* 2025: Leechburg celebrates its 175th anniversary with community events.<ref name="Trib2025" />