Several exhibition cases installed from 1946 – 1964 in the Smithsonian Castle displayed personal and professional mementos of Smithsonian Institution Secretaries Joseph Henry (1846-1878), Spencer Fullerton Baird (1878-1887), Samuel Pierpont Langley (1887-1906), and Charles D. Walcott (1907-1927). The display coincided with the centennial celebration of the Institution’s founding in 1846. This case features Langley’s academic robes and awards (Courtesy Smithsonian National Museum of American History)
