Fire broke out two weeks ago at the 1810 Derrin house, home of one of Avon's earliest families.
Workers restoring the house tossed oily rags in trash cans and they spontaneously ignited.
The Avon Historical Society uses it as a farm museum. They had planned to have a
celebration in June to recognize the Derrin family's arrival in town 250 years ago.
One room has extensive fire damage and others have heat and smoke damage.
Fund-raising to fix it is underway.