Historic New England - Preservation organization that maintains historic buildings open to the public throughout the region. (Formerly known as the Society for the Preservation of New England Antiquities.) - http://www.historicnewengland.org/
Second Empire Mansards - Information about this architectural style, with photos of fine examples in Massachusetts and Rhode Island. - http://www.mansard.org/
Historic Houses of New England - A guide to New England's Historic houses that are open to the public. - http://www.antiquing.com/oldhomes.htm