Genealogy centers: Libraries and Archives
New England Historic Genealogical Society has valuable resources on its website. The Library is well-arranged for genealogical work. There is a fee for non-members, but a great deal can often be done there quickly, especially for New England families. The staff there are genealogical experts.
National Archives at Boston has a research guide: For Genealogists and Family Historians. Many National Archives microfilms are available here.
National Archives has a research guide: Genealogists/Family Historians guide for National Archives and Records Administration.
Massachusetts Archives. Researching Your Family's History at the Massachusetts Archives