Description: [caption id="" align="aligncenter" width="374" caption="A reproduction of the facade of a 19th century instrument shop of Benjamin Pike of New York City in the Hall of Physical Sciences, The exhibit opened in March 1966 in the Museum of History and Technology, now the National Museum of American History, 1966, by Unidentified photographer, Black and white photographic print,
Description: [caption id="" align="aligncenter" width="367" caption="A diorama of Andrew Ellicott and his assistant Benjamin Banneker taking a break from surveying the boundaries of Washington, D.C., in "Laying out the Nation's Capital" in the Hall of Physical Sciences, 1966, by Unidentified photographer, Black and white photographic print, Smithsonian Institution Archives, Record Unit 95,