The Aubrey Beardsley Collection contains drawings from Beardsley's early Art Nouveau work, book illustrations, borders, chapter headings, title pages, and posters. In addition, a signed autograph manuscript of "The Art of Hoarding," notes for a Volpone prospectus, its revision, and introduction are included, as well as notes for a short story, "The Celestial Lover," which Beardsley never developed, and portions of the original holograph manuscripts of "Under the Hill" and "The Ivory Piece."

Among the major correspondents are Edmund Gosse, Robert Underwood Johnson, and Leonard Smithers. Albert Eugene Gallatin, art critic and collector of this material, is also represented in letters from Henry Harland, Philip Hofer, Mitchell Kennerley, Percy Lubbock, A. Hyatt Mayor, Arthur Symons, and others. In addition, there is correspondence from Douglas Ainslie, Joseph M. Dent, John Lane, and Beardsley's mother and sister, as well as photographs of Beardsley and family members.