Papers and correspondence including letters from leading intellectuals of the United States and Europe. Much of this correspondence pertains to the publication and critical discussion of his two influential works, MANHOOD OF HUMANITY : THE SCIENCE AND ART OF HUMAN ENGINEERING (1921) and SCIENCE AND SANITY : AN INTRODUCTION TO NON-ARISTOTELIAN SYSTEMS AND GENERAL SEMANTICS (1933).

The papers of the Bonsall Family of Pennsylvania primarily consist of correspondence, personal and professional documents, journals, genealogical tables, photographs, and a family Bible. The majority of the letters, documents, and journals were generated by or for Edward H. Bonsall (1794-1879) and the members of his immediate family, particularly his eldest son, Spencer Bonsall (1816-1888). Also included are documents produced by or for other Bonsall family members, from Richard Bonsall who settled in Philadelphia with William Penn (ca. 1683) to Eleanor Crosby Martin Bonsall (1894-?), the daughter of William Martin Bonsall and granddaughter of Spencer Bonsall.

The diary is a detailed account of Abbott's trip from Sydney, Australia to the Philippines, Hong Kong, Macao, China and Japan. There are numerous pen-and-ink sketches of landscape, architecture, historical sites, and inhabitants, and maps, some in water color. Pasted in the volume are memorabilia such as menus, hotel brochures, postcards, photographs, clippings, calling cards, etc. Of special interest are his accounts of the various native Christian communities he visited. Following the text there is a name index. In addition to the volume there are some related letters, documents, memorabilia and published maps.

This collection consists of copies of correspondence, articles, diaries, memoirs, and other manuscripts by and about the Blackwell family. Also, a small group of papers, including correspondence, documents, photographs, and printed papers, about the Rice family of New York.

Collection of visiting cards of musical artists (composers, vocalists, conductors, etc.) and authors, presidents, and other celebrities of the 19th and 20th centuries, most bearing handwritten messages. There are also photographs and other memorabilia.

Correspondence, manuscripts, notes, drafts of speeches, appointment books, subject files, documents, photographs, memorabilia and printed materials. There are notes from her lectures on Sociology at Adelphi College in 1911-1912; papers from 1912-1932, when Perkins served on the Commission for Safety and on the Industrial Commission of New York State; the main body of the material is from the period of her cabinet office, 1933-1945; and some items from her days on the Civil Service Commission, 1946-1953. Also included are personal and family papers.

The De Kroyft Papers comprise letters, legal and financial documents, genealogical materials, miscellaneous items, advertising notices and press cuttings, and a collection of calling cards.

A collection of the personal papers, including personal correspondence and financial documents, of the family of James Otis Hoyt (1842-1896), a prominent New York Lawyer.

Correrspondence, manuscripts, notes, memoranda, documents, photographs and printed materials. In addition to personal correspondence and documents, there are files of Amnesty International, the human rights organization of which Morris was American Section chairman. Also included are notes and manuscripts of Morris' studies in Japanese literature and culture, particularly relating to his many books and translations. His interest in puzzles, and compilations of several volumes of them, are reflected in notes and correspondence. Among the major correspondence are Donald Keene, Anthony Powell, Sacheverell Sitwell and Arthur Waley

The correspondence, research, and teaching files of French-American cultural historian and Columbia University professor emeritus Jacques Barzun (1907-2012).