- CollectionPamphlet/020 - Grinnell Town History 1840- 1850-1950
- Box11 - Untitled
- File20pH18h - Hamilton, Henry M. A Chapter in the Early History of Grinnell, Iowa.
- File20pH18ha - Hamilton, Henry M. Letters to L. F. Parker
- File20pH18hab - Hamilton, Henry M. Letter to Grinnell Historical Society.
- File20pH181 - Hamilton, John David. "The Quiet Revolution in Middle America" .
- File20pH33 - Hazelwood Cemetery. Guided Tour
- File20 pH34i - Iowa Brass Bands
- File20pH42 - Grinnell in 1854 pamphlet.
- File20pH42c - Grinnell History newspaper clippings.
- 1 more...