United Steelworkers of America
In the Grant Building here on June 17, 1936, the Steel Workers Organizing Committee was founded. Renamed in 1942, the USWA became one of the world's largest unions, embracing over a million workers. Philip Murray was its first president.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDigital Commonwealth, Boston Public LibraryDavid Rumsey Map Collection, Stanford LibrariesUSGS Historical Topographic Map Collection
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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