- COORDINATES: 40.538262, -79.379512
- COUNTY: Indiana
- DISTANCE TO NEXT: Jacksonville - 5
- EXPLANATION OF NAME: Named For Clark Family of Pioneers
- FOUNDED: 1829
- MANUFACTURER: Believed to be Geiser Mfg. Co. of Waynesboro PA. Although this specific marker is not marked, another one at this town is so marked.
- STATUS: Original post missing; mounted on wooden post.
Dec 2010 photo by Ron Kuzemchak
August 2016 photo by Mike Wintermantel
August 2016 photo by Mike Wintermantel
Jan. 2017 photo by Ron Kuzemchak
Iselin Road at north end of town