Description: A daily photo highlight from Smithsonian collections. [caption id="" align="aligncenter" width="441" caption="A papier mache model of a Stegosaurus dinosaur in the Fossil Reptiles Exhibit. The exhibit opened in June of 1963 in the National Museum of Natural History as part of the Exhibits Modernization Program, 1963, by Unknown photographer, Photographic print, Smithsonian