- CollectionMS/MS 01.51 - Leonard F. Parker. Notes for his book, History of Poweshiek County 1906- 1911 1906-1911
- Box2 - Untitled
- File1 - Silos
- File2 - Poweshiek Protection Society
- File3 - Short biographies
- File4 - Means of locomotion
- File5 - Poweshiek County
- File6 - Thomas J. Holmes
- File7 - Means of locomotion (msg. folder)
- File8 - Grinnell Register
- File9 - Indian traders agents
- 32 more...