- CollectionArchives/RG-T - RG-T: Treasurer's Office Records 1847-1980
- Series7 - Contracts, agreements, etc.
- Subseries1 - Contracts and agreements
- Box2 - Contracts and Agreements: D - Mc
- File1 - Danforth, Joseph, patent agreement
- File2 - Dunner agreement
- File3 - Electron Microscope - RCA Service Contract
- File4 - Elevator Service Contracts
- File5 - Gates, McDonald & Co. Unemployment compensation insurance
- File6 - General Telephone Co. of Midwest
- File7 - Grinnell, City of
- 21 more...