Curious about our collection of historical materials? The Mill Museum has more than 20,000 objects, photographs, documents, and other objects in our physical Archives, located on the third floor of the Museum’s main building, and the number keeps growing. We are slowly adding items from our physical Archives to our digital Online Archives, which you can access by clicking here. The short video below explains how to use and navigate our CatalogIt Online Archives. We also have some of our collection archived digitally on the Connecticut Digital Archive (CTDA) at the Dodd Center at the University of Connecticut, which you can access by clicking here. If you would like to contact us for an appointment to donate historical artifacts, or to research in our physical Archives, you can email us at

The Mill Museum thanks Connecticut Humanities for grants allowed us to purchase some of the equipment and hire some of the staff that made our Online Archives possible. The Museum also thanks the Connecticut League of History Organizations for a Museum Makeover grant that provided archival shelving and containers, along with professional guidance. The Museum also thanks Historic New England and the Willimantic Rotary Club for grants for preserving and digitizing artifacts in the Museum’s collection. The Museum further thanks the Town of Windham and State of Connecticut for a grant that installed climate control in our Archives.