- COORDINATES: 40.532091, -79.382737
- COUNTY: Indiana
- DISTANCE TO NEXT: Indiana - 14
- EXPLANATION OF NAME: Named For Clark Family of Pioneers
- FOUNDED: 1829
- MANUFACTURER: Geiser Mfg. Co. Waynesboro PA
- STATUS: Marker was reinstalled on November 18, 2016 on a reused post from Sweden Valley in Potter County.

2010 photo by Ron Kuzemchak

2014 photo by M. Wintermantel

June 2014 photo by Mike Wintermantel

November 2016 photo by Mike Wintermantel shows the marker reinstalled

November 2016 photo by Mike Wintermantel

November 2016 photo by Mike WintermantelPA Route 286 West