Letters are primarily to White's mother, Alexina Black Mease White, his father, Richard Grant White, and his wife, Bessie Springs Smith White. The volume of White's letters from Mexico documents an extended trip he took with his elder brother, Richard Mansfield White, to prospect. Also included in the last volume is a letter to White from H. H. Richardson, dated February 22 1878, acknowledging White's resignation from Richardson's firm. Each original manuscript letter is followed by a typed transcription by Lawrence White, unless otherwise noted.

Dorothy Haon (1898-1995) attended the New York School of Fine and Applied Art (later, Parsons School of Design) in 1923-1924, and went on to careers in fashion design and merchandising. The collection, which spans the late 1930s through the 1950s, includes working sketches and notes, cloth patterns, fabric samples, and business records. Also included is work by Dorothy's sister, Marion Haon.

The Duer Family papers include correspondence, diaries, genealogical manuscripts and notes, miscellaneous poetry, and early photographs, daguerreotypes, tintypes, engravings, and illustrations (the Duer coat of arms). The collection depicts aspects of social customs in Old New York, patriotism, and life abroad.

Three scrapbooks of correspondence, documents, and clippings of Zanetti. Scrapbook, 1929-1941, containing clippings about ALICE'S ADVENTURES IN WONDERLAND by Lewis Carroll and the Lewis Carroll centenary in 1932; and other unrelated clippings. Scrapbook, 1940-1952, containing correspondence, documents, and memorabilia dealing with Zanetti's World War II Army service with the Chemical Warfare Service in London. Among the correspondents are Omar N. Bradley, Nicholas Murray Butler, W. Averell Harriman, and the 9th Duke of Portland. Scrapbook, 1917-1940, containing correspondence, documents, and memorabilia dealing with Zanetti's World War I Army service with the Chemical Warfare Service in France and his later work with the Army Reserve; and his military medals, 1919-1945.

The collection consists of eight notebooks kept by Mariette Cassels (1905-1993) while studying in the Paris Ateliers of the New York School of Fine and Applied Art (now, Parsons The New School for Design) in 1930-1931. Includes lecture notes, photographs, postcards, clippings and sketches of furniture and decorative moldings.

A student notebook kept by Marion Reed, who attended Parsons School of Design's Paris Atelier in the summer of 1927. The notebook contains lecture notes, postcards and class handouts.

Album of photographs taken and purchased by Stanford White on a trip to France in 1878.

Letters written to Dibdin. All of the material is concerned with the execution of drawings, etched and or engraved plates and woodcuts for Dibdin, perhaps in preparation for his BIBLIOGRAPHICAL ANTIQUARIAN AND PICTURESQUE TOUR IN FRANCE AND GERMANY (1821). Chief among the correspondents are the English engravers James Mitan, George Hollis, and Frederick C. Lewis.

Also, typescripts of lectures delivered by Boring in architecture courses at Columbia, 1932-1933, miscellaneous typescripts of articles and printed materials, 1930-1933, and a typescript of Boring's autobiography, MEMORIES OF THE LIFE AND WORK OF WILLIAM A. BORING, circa 1937. Also included are four sketches by Henri Gauthier, Edward Tilton, Maurice Sashin, and Joseph Laudin.