| 1880 History of Delaware County |
| Pioneer Cemeteries of Liberty Township |
| Tombstone Inscriptions and Other Records of Delaware County |
| Powell Cemetery Inventory |
| Abstracts of Delaware Ohio Newspapers (4 volumes 1821-1899) |
| Early maps and atlases of Liberty Township |
| Genealogies and histories of many local families |
| Surname files containing donated photos, ancestor charts, newspaper clippings and obituaries |