Here’s why some Pa. historical markers are missing from their posts

The Pennsylvania Historical & Museum Commission is conducting routine maintenance on over 2,500 historical markers. The project affects signs in Philadelphia, Berks, Chester, and Northampton counties. This maintenance work explains the temporary absence of markers from their usual locations.
The Pennsylvania Historical & Museum Commission is conducting routine maintenance on more than 2,500 markers across four counties, including Philadelphia, Berks, Chester and Northampton.
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