Description: The National Museum of Natural History (NMNH) first opened to the public on March 17, 1910, as the new United States National Museum. The National Museum was first housed in what is now the Arts and Industries Building. The postcards in this gallery provide exterior views of the building as well as images of exhibits inside the museum. We know that many of these postcards are
Description: In honor of the anniversary of the discovery of x-rays, a look inside the Foucault pendulum that used to hang at the National Museum of American History.