Description: It's National Zoo and Aquarium Month! Let's explore the early days of the National Aquarium and its commitment to the promotion of marine science and aquaculture.
Description: Smithsonian Secretary Samuel Pierpont Langley at Quantico, Virginia, on the day of the test flight of Aerodrome No. 5 on the Potomac River, by Alexander Graham Bell, MAH-18836.
Description: United States Fish Commission research station, possibly along the Potomac River, 1880s, Glass negative [double exposure], SIA Acc. 11-006, MAH-5600.