Historic New England has a traveling panel exhibition on this topic: http://www.historicnewengland.org/collections-archives-exhibitions/exhibition-rentals/the-preservation-movement-then-and-now/the-preservation-movement-then-and-now. You can contact Joanne Flaherty for information.
Anne Starr
Assistant Curator of Exhibitions
National Heritage Museum
33 Marrett Road
Lexington, MA 02421
Direct line: 781-457-4140
Fax: 781-861-9846