the post office was built in 1855 for the town's third postmaster, and served in that capacity until 1958. it was lifted off its foundation by flooding occasioned by the great new england hurricane of 1938, at which time it was set on its present foundation, a short distance removed from its original location. in 1962 the building was sold to the grafton historical society, which housed its museum there until 1978. the society continues to own the building, leasing it out.