Keystone Marker Trust

Re-Inventing the Perfectly Pennsylvania Keystone Marker

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town-mifflintown-thompsontown-1025ppellagrini

Published October 26, 2025 at 810 × 1080 in Mifflintown (Thompsontown – 10)
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Oct. 2025 photo by P. Pellagrini

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The Keystone Marker Trust is dedicated to the preservation, restoration, and re-creation of Pennsylvania’s iconic Keystone Marker signs. These signs were produced in the 1920s by the Pennsylvania Department of Highways. Thousands were placed all across the state for many purposes, and several hundred remain today, most of them explaining the origins of town names.

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