 The house was the original home of the Georgetown Historical Society.The Society moved to the Brocklebank-Nelson-Beecher House in 1975 and sold the Dickinson-Pillsbury-Witham House to an archaeologist, who took meticulous care of the property for over 40 years.During that time the building was the subject of a survey by architectural historian and genealogist Abbott Lowell Cummings.