General, A-Z, 1931-1965, undated

Correspondents include Bibliothèque de Versailles, Boston Athenaeum Library, Gaston Brière, Edouard de Callatay, H.S. Clarkson, Clara A. Coolidge, Detroit Institute of Arts, Mantle Fielding, Rene Gimpel, Paul Gouvert, Gulbenkian Foundation, Rostislav Hlopoff, Henry E. Huntington Library and Art Gallery, Helen Martin, Jonce I. McGurk, Serge L. Mons, Musée d'Art et d'Historie (Genève), Musée du Louvre, Museum of Fine Arts (Boston), Peabody Institute, Jacques Seligmann & Co., The Society of the Cincinnati, Eugenia Tolmachoff, J.E. Trindle (regarding attempts to do an astrological reading of Houdon), Union Trust Company of Boston, Widener, Wildenstein, Robert Witt, and Yale University Art Gallery.