A French Louis XVI style mansion designed by Carrère & Hastings and built in 1913-14, and altered by John Russell Pope in 1931-35; an Italian Renaissance Revival style art reference library designed by John Russell Pope and built in 1931-35; a Beaux-Arts style reception hall addition designed by Bayley, Van Dyke, and Poehler and built in 1977; and a viewing garden designed by Russell Page and built in 1977. Application is to install signage and lighting.