Used in Field, Stamm & Ewing. THE CASTLE, AN ILLUSTRATED HISTORY OF THE SMITHSONIAN BUILDING (p. 64)
The Library at the east end of Lower Main Hall, now called the Great Hall, of the Smithsonian Institution Building (SIB), also known as the "Castle." There is a woman reshelving (or retrieving) a book in the center of the photograph.
Smithsonian Institution Archives