Installation of Steam Locomotive in NMHT, by Unknown, 1961, Smithsonian Archives - History Div, The 1401, a 280 ton Pacific-type passenger steam locomotive shown being moved into the National Museum of History and Technology (NMHT), now the National Museum of American History (NMAH), while the building is still under construction. The locomotive is sitting just outside the building, attached to a pulley system, being readied to be moved in. There are several people standing in the foreground, background and right side of the photograph. The locomotive was built in 1926 by the Richmond, Virginia, works of the American Locomotive Company. The front center of the Department of Commerce Building can be seen on the right..