- COORDINATES: 40.899642, -77.166383
- COUNTY: Union
- DISTANCE TO NEXT: Mifflinburg - 6
- EXPLANATION OF NAME: Named for Colonel Hartley Who Owned the Land At Time Town Was Laid Out
- FOUNDED: 1793
- MANUFACTURER: Not noted on marker
- STATUS: Dec. 2010 photo by Clair Clawser shows sign really in need of care. Repainted, straightened and turned around to proper position August 2011 by Jim Carn.
![Photo Dec. 2010 by Clair Clawser](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-1-285x184.jpg)
Photo Dec. 2010 by Clair Clawser
![Photo August 2011 by Jim Carn](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-2-285x192.jpg)
Photo August 2011 by Jim Carn
![Photo August 2011 by Jim Carn](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-3-285x190.jpg)
Photo August 2011 by Jim Carn
![Photo August 2011 by Jim Carn](http://keystonemarkertrust.org/wp-content/uploads/home-image-hartleton-285x207.jpg)
Photo August 2011 by Jim Carn
![March 2018 photo by J. Graham](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-0318graham-200x300.jpg)
March 2018 photo by J. Graham
![](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-0918mwintermantel-1-285x160.jpg)
September 2018 photo by Mike Wintermantel
![](http://keystonemarkertrust.org/wp-content/uploads/town-hartleton-mifflinburg-0324jgraham-285x263.jpg)
Mar. 2024 photo by J. Graham
PA 45 at west end of town