Upon his death in 1964 , he bequeathed the house , 100 surrounding acres , and an endowment of $100,000 to the National Trust for Historic Preservation .
With professional assistance , Mr. Hunnewell had the house carefully restored in the 1930s and 1940s .
Upon Hunnewell 's death in 1964 , Hunnewell bequeathed the house , 100 surrounding acres , and an endowment of $100,000 to the National Trust for Historic Preservation .
With professional assistance , Mr. Hunnewell had the house carefully restored in the 1930s and 1940s .