Robert Vossler Keeley ('51) was a U.S. Foreign Service member and writer who served in a number of posts. The Robert V. Keeley Papers consist of reports, correspondence, writings, journals, and photographs from the breadth of Keeley's career, including his Foreign Service postings in Uganda, Cambodia, Mauritius, Zimbabwe, and Greece, as well as correspondence and other materials created and kept by Robert Keeley's wife, Louise Keeley.

Peter B. Kenen is a well-known economist, prolific writer, and Walker Professor of Economics and International Finance, Emeritus, at Princeton University. These records document Kenen's research and teaching work.

George F. Kennan (1904-2005) was a diplomat and a historian, noted especially for his influence on United States policy towards the Soviet Union during the Cold War and for his scholarly expertise in the areas of Russian history and foreign policy. Kennan's papers document his career as a scholar at the Institute for Advanced Study and his time in the Foreign Service, and include his correspondence files, published and unpublished writings, and personal files.

The collection represents the entire extant archive of Sir Frank Kermode, a distinguished British literary critic, and includes writings (reviews, essays, lectures, radio broadcasts), correspondence, photographs, and printed material, as well as material relating to public controversy about the funding for Encounter, which Kermode co-edited.

Lyman B. Kirkpatrick, Jr. served with the Central Intelligence Agency (CIA) from its inception in 1947 until 1965. The papers document Kirkpatrick's career at the CIA, including his role as inspector general during the Bay of Pigs invasion, as well as his service in the U.S. Army and Office of Strategic Services during World War II, and his time as a professor of political science at Brown University.

Karl Klare is a legal theorist prominent in the field of Critical Legal Studies (CLS). The Karl Klare Papers document Klare's work in the CLS movement. The papers include correspondence and planning materials for CLS conferences, publications and readings assembled for CLS conferences, as well as class readings and syllabi.

Abigail Klionsky is a member of the Princeton University undergraduate Class of 2014 who undertook an oral history project on Jewish student life at Princeton as part of her senior thesis. The collection consists of fifteen transcripts of Klionsky's interviews with Jewish alumni and also includes a copy of a transcript of Henry Morgenthau III's interview with David Frisch in 1979.

Dolores Koch is a noted translator and reviewer of Latin American literature. The materials in this collection were accumulated during her work with Reinaldo Arenas, a Cuban writer living in New York City. Koch translated two of Arenas's books and worked as part of a team handling publication and rights for his work after his death in 1990.

The Stanley Kunitz Papers consists of the literary and personal papers of Stanley Kunitz (1905-2006). A prominent American poet, Kunitz was also a known editor, translator, essayist, and educator. Kunitz's diverse interests are evident in the collection, which includes manuscripts of his writings, extensive correspondence, special-interest files, teaching materials, travel files, documents, photographs, memorabilia, artwork, calendars, annotated books, audiocassettes, papers of others, and printed material.

Daniel C. Kurtzer (1949-) is a professor and former American diplomat. The collection mostly pertains to Kurtzer's work for the U.S. Foreign Service.

Henry R. Labouisse (1904-1987) was a distinguished American diplomat and international public servant. He served as director of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) from 1954 to 1958 and as executive director of the United Nations Children's Fund (UNICEF) from 1965 to 1979. He also served as a United States government official working on the formation and implementation of foreign economic policies during World War II and the 1960s. Labouisse's papers document his career with the United Nations and with the State Department and include correspondence, speeches and publications, as well as biographical and genealogical material.

The Ivy L. Lee Papers consist of personal papers and material from the public relations firm of Ivy Lee and Associates, documenting Ivy Lee's public relations theories and practice. Included are correspondence, diaries, articles, writings, public relations material, newsreels, and photographs reflecting Lee's interest in public relations, transportation (especially railroads), financial markets, and foreign relations, among others. Digital images of the Interborough Rapid Transit posters in Series 9 are available at Digital PUL.

The Vicente Leñero Papers contain materials pertaining to the Mexican playwright, novelist, and screenwriter Vicente Leñero (1933- ). Included are manuscripts, correspondence, and printed material.

This collection contains the musical manuscripts, musical sketches, correspondence, teaching materials, business files, and other personal papers of American composer Frank Lewin (1925-2008), who resided in Princeton from 1951 until his death. Audio and video recordings on optical media and a hard drive include music, films, and interviews; digital materials also include photographs, documents, production information, scores, parts, copyright forms, and contracts.

David Kellogg Lewis (1941-2001) was an American philosopher who taught at Princeton University and the University of California, Los Angeles and contributed to metaphysics, philosophy of mind, philosophy of language, philosophy of mathematics, philosophy of science, decision theory, epistemology, meta-ethics, and aesthetics. Lewis's papers include over four decades of his correspondence with other philosophers and scholars, including David M. Armstrong, J. J. C. Smart, Frank Jackson, D. H. Mellor, M. J. Cresswell, Allen Hazen, John Bigelow, and others, as well as drafts of his articles, books, reviews, and unpublished writings with related correspondence, his undergraduate and graduate student papers and class notes, research materials from his time at the Hudson Institute, photographs of Lewis with friends and fellow philosophers, a group of files kept by the Australian philosopher David M. Armstrong regarding Lewis, papers of Stephanie R. Lewis, and family papers.