- Office of the Auditor (Delaware County, Ind.); Woolpert Geographic Information Services; The Sidwell Company
- 1975-2000 (Plat)
- Indiana Memory
- Ball State University. University Libraries. Archives and Special Collections
Ball State University. University Libraries
W 1/2 SW 1/4 SEC 16 T20N R10E. Perkin's Subdivision; Perkin's Addition.
- Plats; Maps; Aerial photographs; Black and white images
- Center (Delaware County, Ind. : Township)