"Personal Legacy: The Healing of A Nation" Exhibit, NMAH, by Penland, Dane A, 1992, Smithsonian Archives - History Div, Duery Felton and Jennifer Locke examine a few of the 30,000 mementos that have been left during the years by visitors at the Vietnam Veterans Memorial. Some of them were included in the exhibit "Personal Legacy: The Healing of A Nation" which opened in 1992, at the National Museum of American History..