National Air and Space Museum Archives
National Air and Space Museum Archives
Smithsonian Institution Archives
Smithsonian Institution Archives
Logbook of the steamer Halcyon (formerly called the Lookout), 8 March to 9 December 1877.
Archives of American Art
National Air and Space Museum Archives
Ralph Rinzler Folklife Archives and Collections
Smithsonian Institution Archives
Archives Center, National Museum of American History
Smithsonian Institution Archives
Photograph of Leaves by Robert E. Silberglied, Galapagos Islands [Image No. SIA2012-7933]