Consists of a closed collection of more than 5,000 Western Americana photographs, consisting mostly of documentary photographs of the Trans-Mississippi West from the late 1860s to early 1900s, largely from the perspective of white photographers and settlers. Subjects include American Indians (especially studio portraits), natural wonders, cities, towns, buildings, and economic activities (mining, railroads, logging, and agriculture). Some photographs relate to the Indigenous populations of Mexico and Central America. The dimensions, physical formats, and photographic processes of the photographs vary widely.

The papers of Whiting Willauer (1906-1962) reflect Willauer's entire career, but focus most strongly on the period from 1941 to 1954 when Willauer was in China and worked for China Defense Supplies, Inc. (1941-1944), the Foreign Economic Administration (1944-1945), the United Nations Relief and Rehabilitation Administration [NRRA] (1946-1947), and Civil Air Transport, Inc. (1946-1954). The papers also document his positions as an admiralty lawyer for the New York City law firm, Bingham, Dana and Gould (1931-1938), as Attorney, Criminal Division at the Department of Justice and Special Assistant to United States Attorney General (1929-1940), Special Counsel for the Federal Power Commission (1941), and his appointments as United States Ambassador to Honduras (1954-1958) and Costa Rica (1958-1961). In addition, materials which reflect Willauer's role as a delegate to the Organization of American States' Meetings of Foreign Ministers (August 1960) and to the United Nations General Assembly (October 1960) are found in the papers.

Consists of selected papers of Thornton Wilder, the celebrated American novelist and playwright, winner of three Pulitzer Prizes.

Clinton Wilder (Princeton Class of 1943) was an American theatrical producer. His collection consists of playbills he collected as well as typescripts and production materials of plays he produced.

Consists of papers of the American author and novelist Wendell Wilcox (1906-1981), including personal correspondence and photographs of his wife, Esther Willson Wilcox, their relatives, and other writers and friends.

Consists of the papers of Hungarian-born, Nobel Prize-winning physicist Eugene Wigner, and includes correspondence, subject files, writings, and offprints reflecting his long career in physics.

The Historical Photograph Collection: Individuals series consists of photographs of faculty, administration, trustees, staff, students, and notable visitors to Princeton University.

Hans A. Widenmann (1897-1976) was a stockbroker and economist with expertise in national and international monetary affairs. His successful business career was largely spent at Loeb, Rhoades & Company, and he was also frequently called upon to speak about international finance subjects. Widenmann's papers document his career at Loeb, Rhoades & Company and include his correspondence and writings, topical files, and biographical files.

The Delafields were avid collectors of family history and family-related memorabilia in the Hudson River Valley region of New York state. This collection consists of the papers of the Delafield family and related families, most prominently the Livingstons, containing both personal papers and papers collected for their genealogical and historical significance.

The Dorothy Shipley White Collection encompasses two sets of photographs, one on the life of Charles deGaulle and the other on French Africa. White presumably collected the photographs in preparation for her book, Black Africa and deGaulle (Pennsylvania State University Press, 1979). Mrs. White sent the photographs and negatives of the deGaulle photographs to Princeton in 1989.