This accession consists of project files from the Construction Division, Office of Design and Construction. Materials include blueprints, contracts, specification,
cost estimates, and correspondence with contractors. Buildings and museums documented in this collection include: Renwick Gallery, Smithsonian Astrophysical Observatory, National
Museum of Natural History, National Museum of American History, National Air and Space Museum, Smithsonian Institution Building (Castle), Arts and Industries Building, National
Museum of American Art, and National Portrait Gallery.