The Edwin Atlee Barber Records contains correspondence covering a broad range of topics and is especially rich in correspondence regarding acquisitions, appraisal, and the identification and authentication of artifacts. They provide information about Barber’s role as both Curator/Director and administrator of the Pennsylvania Museum and School of Industrial Art and his activities as a scholar.

George Grey Barnard was an American sculptor and collector of Medieval art. He located and arranged the pieces that eventually became "The Cloisters" for the Metropolitan Museum of Art. His papers are comprised primarily of correspondence and financial and business records documenting both his collecting and creation of art. The collection includes a significant amount of personal correspondence, biographical information, and family financial records as well.

The Marcel Duchamp Research Collection is comprised of ephemera, photographs, clippings, writings and correspondence related to the artist Marcel Duchamp, his life, work, and legacy which was collected and compiled by the Department of Modern and Contemporary Art, Philadelphia Museum of Art.