Description: Demolition of roads on the National Mall during conversion of roadways (Washington and Adams drives) to gravel walkways for pedestrians, October 28, 1975, by Jim Wallace, SIA Acc. 11-009, 75-13713-22.
Description: In February 1975, twenty Smithsonian scientists gathered at the National Zoo's Conservation Research Center in Front Royal, Virginia to talk about their research and the future of science at the Smithsonian.