Harold D. Langley
American diplomat and naval historian (1925–2020)

Harold David Langley (15 February 1925 – 29 July 2020) was an American diplomatic and naval historian who served as associate curator of naval history at the Smithsonian Institution from 1969 to 1996. As a naval historian, he was a pioneer in exploring American naval social and medical history.
Early life and education
Langley was born in Amsterdam, New York. The son of Walter Benedict Langley and Anna Mae McCaffrey, Harold Langley joined the United States Army at the age of eighteen and served from 1943 to 1946, receiving along with his unit the Army Meritorious Service Medal and the Asiatic–Pacific Campaign Medal. Following his military service, he attended Catholic University of America, where he earned his A.B. in 1950. Going on for graduate work, he attended the University of Pennsylvania, where he earned his M.A. in 1951 and his Phd in 1960 with a dissertation on "The Humanitarians and the United States Navy, 1798–1862."
Professional career
Langley began his professional career at the Library of Congress, Manuscripts Division, in Washington, D.C., where he served as a manuscripts assistant in 1951–52, while a graduate student. Moving to the University of Pennsylvania Libraries in Philadelphia, Pennsylvania, where he was a graduate student, he served as a manuscripts specialist, rare book collection, 1952–54. Returning to the Library of Congress in Washington, he was a manuscripts specialist, there in 1954–55. In 1955, Marywood College in Scranton, Pennsylvania, appointed him assistant professor of history. He remained there until 1957, when he received an appointment as a diplomatic historian in the U.S. Department of State.
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Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated May 11, 2025. The linked authority identifier is Q5660416. VIAF identifies the subject as 56783168. The Library of Congress control number is n50035889. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1925, 2020, 1969 and 1996.
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This entry incorporates text from “Harold D. Langley” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.