Félix Candela was an influential Spanish-born architect and structural engineer, known for his innovative designs using reinforced thin-shell concrete to create the highly efficient hyperbolic parabaloid shapes used in his construction of many well-known churches, factories, and other buildings, primarily in and around Mexico City in the mid-20th century. The collection consists of professional and personal papers, including photographic files documenting his projects, architectural drawings and designs, drafts of lectures and published papers, correspondence, appointment books, student notebooks and artwork, personal photographs and albums, awards and certificates, architectural reference books and magazines, construction materials catalogs, and clippings on various architecture and design topics and on Candela's own work.

The Woodrow Wilson Foundation was an organization formed in 1921 in New York City for the "perpetuation of Wilson's ideals" through research grants and publications. The collection consists of the administrative records of the Woodrow Wilson Foundation, the bulk of which are financial records, correspondence, notes, committee minutes, press releases, research proposals, and awards dating from 1921-1963. The collection also includes a small amount of audivisual material, photographs and sound recordings.

The ACLU is the preeminent civil liberties organization in the United States. These records document the work of their national office in the areas of civil rights, children and women's rights, freedom of speech (and all First Amendment questions), and due process, among many others, predominantly from 1970 to 2000.

The McCaddon Collection of the Barnum and Bailey Circus consists of correspondence, photographs, scrapbooks, and other material collected by business manager Joseph T. McCaddon prior to the 1907 merger of the circus with Ringling Bros.

Ray Stannard Baker (1870-1946) was a journalist, editor, and author. He earned recognition for his articles on liberal reform, for his philosophical essays written under the pseudonym David Grayson, and for his authorized biography and other works on President Woodrow Wilson. Baker's papers contain materials collected for his biography of President Woodrow Wilson and related to the Paris Peace Conference (1919-1920), which he attended as Director of the American Press Bureau, and include correspondence, publications, photographs, and newspaper clippings.

The collection consists of American consulting engineer and newspaper columnist, Howard W. Ambruster's works, correspondence, miscellaneous material, and printed matter.

Carol Pitchersky (1947-2004) was a fundraiser and consultant who helped bring financial stability to dozens of public interest groups, notably the American Civil Liberties Union (ACLU). She served as Associate Director in charge of development and strategic planning at the ACLU and as a consultant to other prominent nonprofit organizations. The papers document Pitchersky's work as a fundraiser at the ACLU during the 1980s and for public interest groups in the 1970s and 1990s.

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.

German Semitic philologist, Rudolf-Ernst Brünnow (1858-1917) was a professor of Semitics at Princeton (post-1910) in Greek, Latin, German, French, Turkish, Assyrian, and English. The collection consists of notes, photographs, inscriptions, tables, and descriptions by Brünnow.

This collection contains ephemera concerning religious issues and events in Brazil, published between 1899 and 2002.