First School Slate Factory
The first factory to produce blackboard and school slates common in U.S. classrooms opened nearby in 1847. Slate production peaked at over one million pieces early in the 20th century, leading to Slatington's distinction as the nation's top slate and blackboard producer.
David Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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