Consists of the business records of Gerard B. Lambert (Princeton Class of 1908), including correspondence, bills, invoices, and financial statements, which reflect his position as head of the Lambert Pharmacal Co. of St. Louis, developers and manufacturers of Listerine.

This collection consists of letters to Arturo Lagorio, Argentine poet and author, by various Latin American and Spanish writers, including Samuel Eichelbaum, Maria Granata, Nicolas Olivari, and Cesar Tiempo.

Consists of letters by Laflin (Princeton Class of 1924) to Helen D. Hill, covering his years at the Lawrenceville School and Princeton University, and typescripts of four of his plays based on religious themes.

The collection consists of letters by American educator and playwright Louis Ellsworth Laflin (Princeton Class of 1924) to George R. Kernodle (a friend from Yale Drama School), written over thirty-three years. Also included are Laflin's notes and papers on Asian/Indian, Egyptian, and Greek drama, copies of six plays written by him, and copies of two essays on the founding and history of Princeton's Theatre Intime.

Consists of approximately 5000 early 20th-century American architectural drawings (blueprint and trace drawings), primarily by C. Grant La Farge and various firms with which he was associated, including Heins & La Farge, La Farge, Clark & Creighton, La Farge, Warren & Clark, La Farge & Morris, and La Farge & Son. There are also groups of drawings by the architects Wilson Eyre, Pennington Satterthwaite (Princeton Class of 1893), Robert Gibson, and a few miscellaneous firms.

Rudolf Ladenburg was a German-born scientist who became a nuclear physicist at Princeton University until his retirement in 1950. The collection contains some of Ladenburg's manuscripts, lecture and course notes, and notes on nuclear physics.

Consists of miscellaneous papers of George M. L. La Branche relating to angling.

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 Jean Labatut Papers consists of the professional papers of Jean Labatut (1899-1986), which include correspondence with prominent twentieth-century architects, landscape architects, and designers, the architectural files for his major and minor projects, and the administrative papers and teaching materials that he accumulated while he was the Director of Graduate Studies in Architecture at Princeton University (1928-1967), the position for which he is best remembered. Also included are Labatut's family papers, containing albums of photographs compiled by his sister-in-law, Mrs. Elliott F. Shepard, while she helped to operate a convalescence home founded by her husband in France for soldiers in World War I.

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.

Consists of the papers of song-writer, playwright, and poet Clare Beecher Kummer. Included are manuscript plays, musical compositions, songs, verse, and correspondence.

Louis Kronenberger was an American literary critic, novelist, and biographer. Contains correspondence with notable literary figures as well as editorial requests and drafts of Kronenberger's writings.

Arthur Krock (1886-1974) had a long and distinguished career as a journalist, working for much of his career as Washington correspondent and columnist for The New York Times. His column "In the Nation" was noted for its depth of information and analysis, especially on American politics. The Krock papers document his journalism career, especially with The New York Times, and include his correspondence, his writings, and biographical materials.

The Kreuger & Toll Company, founded by Ivar Kreuger, was the holding company of an international match trust based in Sweden whose securities were popular during the 1920s. The company was organized as a giant pyramid scheme and went bankrupt in 1932. The Kreuger & Toll Company Records document the company's bankruptcy and include court and legal documents and accountants' reports.

Richard K. Korn was a clarinetist, conductor, and founder of the Orchestra of America. He was also involved in the American Council for Judaism. His papers include correspondence with composers, photographs, and correspondence with other members of the American Council for Judaism.

Consists of correspondence, photographs, scrapbooks, memorabilia, and newspaper clippings of set designer John Koenig's life.

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.

Consists of material relating to Ginerva King's romantic relationship with American author F. Scott Fitzgerald.

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.

Fred I. Kent (1869-1954) was a banker who spent the majority of his career at Bankers Trust Company in New York. He was an expert on foreign exchange, and during World War I and its aftermath was involved with establishing foreign exchange policies, reparations, and war debt. Kent was also active in numerous organizations, including the American Bankers Association and the International Chamber of Commerce. Kent's papers include his correspondence with businessmen and politicians about financial and economic issues, articles and speeches written by Kent, and papers documenting his involvement with several banking and economic organizations.

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.

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.

Visiting Professor in the Department of Biochemistry at Princeton and Nobel Peace Prize winner, Edward Kendall conducted biochemical research and is best known for his work on the hormones of the cortex of the adrenal glands. His collection includes typescripts of scientific articles, laboratory notebooks and notes, correspondence regarding patients, and a great deal of printed material.

Contains correspondence, photographs, memorabilia, and printed matter of American educator and librarian, Maurice Kelley (Princeton Class of 1934).

Patrick J. Kelleher was the Director of the Princeton University Art Museum from 1962-1973. Consists of correspondence, publications, notes, press releases, schedules, and photographs collected by Patrick J. Kelleher over the course of his directorship of the Princeton University Art Museum.

Patrick Kelleher was director of the Princeton University Art Museum from 1960 to 1972. His papers consist of articles, notes, photographs, and printed matter from Kelleher about the Holy Crown of Hungary. There is a smaller selection of correspondence with artists and colleagues about the direction of the Art Museum.

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.

The James H. Keeley Jr. papers document Keeley's career in the Foreign Service from 1920 through the 1960s. Over the course of his career, Keeley served in Turkey, Syria, Lebanon, Canada, Greece, Belgium, and Italy.

Edmund Keeley (1928-) is an author, translator, and Charles Barnwell Straut Professor Emeritus of English at Princeton University, best known for his translations and writings on Greek poets C. P. Cavafy, George Seferis, Odysseus Elytēs and Giannēs Ritsos. The papers consist of Keeley's drafts and proofs of translations, fiction, and nonfiction, including novels, articles, essays, introductions, reviews, and other writings, as well as for works he edited, along with personal and professional correspondence, faculty material, files of the P.E.N. American Center and other institutions with which he was involved, awards and speeches, biographical materials, family papers, scrapbook and other printed materials, manuscripts of others, and photographs and photograph albums.

Dick Kazmaier was a Princeton University student and football player from 1948 to 1952. The Dick Kazmaier Papers include Kazmaier's course materials (class notes, exams, and thesis research material), as well as football team photographs, award certificates, and a scapbook of newspaper clipplings from 1949 to 1953.

Consists of papers of Nikos Kavvadias, a Greek poet who spent most of his life traveling the world as a wireless operator on ocean freighters.

Consists of correspondence and miscellaneous materials related to Walter Kauzmann's work on the Manhattan Project and his career as a professor of chemistry at Princeton University.

The Philosophy Manuscripts of Walter Kaufmann consists of manuscripts, galleys, and page proofs of many of the writings and translations of the American philosopher, educator, and author Walter Kaufmann (1921-1980).

Sonja Karsen, born in 1919, was a professor of Spanish at Skidmore College and intensively researched Jaime Torres Bodet and Guillermo Valencia, two Latin American politicians and poets. The Sonja Karsen papers contain much of her research on these two figures.

Jerome Karabel is an American sociologist known for his research on university admissions policies. Consists of materials compiled by Jerome Karabel while researching for his 2005 book The Chosen: The Hidden History of Admission and Exclusion at Harvard, Yale, and Princeton. The papers contain correspondence, memoranda, reports, and other documents.

Consists of writings, correspondence, documents, photographs, and other miscellanea of the American editor, novelist, and storywriter Hugh MacNair Kahler.

Consists of writings, correspondence, and printed matter of the Jewish scholar, author, and lecturer Erich Kahler, including some magazines and newspaper articles collected for his research purposes. There is also material and correspondence assembled after his death by his wife, Alice Loewy Kahler.

William Jovanovich (1920-2001) was an American publisher, author, and businessman, who led the publishing firm Harcourt Brace Jovanovich from 1954 to 1991, as president and later as chief executive officer. The collection consists of Jovanovich's author and publisher files, including an extensive file on Charles A. Lindbergh, along with correspondence, writings, personal and family papers, memorabilia, and other files documenting his career as a major American publisher in the 20th century, his creative pursuits in fiction and nonfiction, and his interest in Yugoslav literature and textbook publishing.

The Thomas H. Johnson Papers consists of correspondence, subject files, notes, printed matter, diplomas, and other miscellanea of the American educator and editor Thomas H. Johnson (1902-1985).

This collection consists of letters to H. Wright Johnson (Princeton Class of 1948) regarding Harley Granville-Barker, the subject of Johnson's senior thesis at Princeton. Included is Johnson's thesis, typescripts and correspondence concerning The Prevalence of Witches and Weekending, and correspondence between Johnson and George Bernard Shaw who worked closely with Granville-Barker in the English theater.

Consists of selected manuscripts and some correspondence of Dorothy M. Johnson, a writer of Western fiction.

The collection consists of editorial correspondence and some business material of the American publisher.