Diving consultant Joseph Libbey, the first nationally certified instructor in the D.C. area, who taught and certified Smithsonian curators, technicians, and specialists as divers in connection to their work, as well as accompanied teams of scientists on a number of Smithsonian collecting expeditions to gather specimens and supervise other divers, August 30, 1979.

Removal of orchestrion from Arts and Industries Building after three years featured in the "1876: A Centennial Exhibition." 

In honor of National Dog Day, let's take a look at images of furry friends from around the Smithsonian.

Cameras and photographic equipment for United States National Museum photography exhibition, circa 1913.

Mount of ground sloth skeleton in the Division of Vertebrate Paleontology lab during preparation for exhibition at the United States National Museum in the Natural History Building, 1946.

Section of Vertebrate Paleontology staff of the United States National Museum, with research associate Oliver Perry Hay, and assistant curators Charles Whitney Gilmore and James Williams Gidley, 1910s.

Aerial view of the National Mall looking east from the Washington Monument during its first stage of building towards the U.S. Capitol, with the Department of Agriculture building and gardens, the Smithsonian Institution Building, or Castle, and the United States National Museum, now known as the Arts and Industries Building, in view, circa 1881.

Effects of milk on rodent skeletons from "Public Health" exhibition in the United States National Museum, now known as the Arts and Industries Building, circa 1930s.

See new collection highlights posted to the Smithsonian Institution Archives website.

Buildings on the National Mall, including temporary government buildings constructed during World War II, now the site of the National Museum of American History, the Department of Labor and Interstate Commerce Commission (ICC) buildings, and the Departmental Auditorium, July 3, 1946.