Philip L. Cantelon is History Associates' chairman of the board and chief executive officer. One of the firm's cofounders, he is an expert on oral history, foundations, business and energy history, and the history of deregulation. He is the author or coauthor of numerous books, including The History of Consolidated Freightways, Inc. and CNF Transportation Inc., 1929-2000; The History of MCI, 1968-1988: The Early Years; The Roadway Story; and Crisis Contained: The Department of Energy at Three Mile Island. He is the coeditor of Corporate Archives and History: Making the Past Work and The American Atom, both widely used college textbooks. His articles have appeared in Technology and Culture and American Heritage. Dr. Cantelon's client list includes General Electric, the Kendall and GAR Foundations, Consolidated Edison Company, Texas Instruments Inc., MCI Communications Corporation, the American Furniture Hall of Fame, and The Children's Inn at NIH. He is a founding member of both the National Council on Public History and the Society for History in the Federal Government, and he received the Society's Franklin D. Roosevelt Award for 2004. Dr. Cantelon also plays an active role in the affairs past and present of Montgomery County, Maryland; he has served as chairman, president, and board member of the county's historical society. For nine years he taught contemporary American history at Williams College; he also held a Fulbright Professorship of American Civilization at Kyushu National University and Seinan Gakuin University in Japan. Dr. Cantelon is a graduate of Dartmouth College, earned his MA at the University of Michigan, and received a Ph.D. in history from Indiana University.

Rodney P. Carlisle, a founding member of History Associates, offers extensive expertise in oral history, petroleum policy, energy history, naval R&D policy, nuclear reactors, technology and policy, press and media, and post-Cold War military strategy. His publications include Encyclopedia of the Atomic Age; Where the Fleet Begins: A History of the David Taylor Research Center, 1899-1987; and Supplying the Nuclear Arsenal: American Production Reactors, 1942-1992. Dr. Carlisle has also cowritten Jack Tar: A Sailor's Life with J. Welles Henderson, which chronicles daily life aboard merchant and naval ships between 1750 and 1910, and Brandy, Our Man in Acapulco: The Life and Times of Colonel Frank M. Brandstetter with Dominic Monetta, about a Hungarian immigrant who became a noted hotelier and Army intelligence officer. Dr. Carlisle is professor emeritus of history at Rutgers University in Camden, New Jersey, where he has taught courses in recent American history, the history of espionage, nuclear history, and public history. He is a graduate of Harvard College and received his master's and doctoral degrees in history from the University of California at Berkeley.

Richard G. Hewlett, one of History Associates' cofounders, is widely recognized for his work in the history of science and technology. He established the historical office and archives at the US Atomic Energy Commission and served as chief historian of that agency and its successors until leaving government in 1980. Dr. Hewlett has served as historiographer for the Washington National Cathedral since 1978. He is the coauthor of The New World, 1939-1946, Atomic Shield, 1947-1952, and Atoms for Peace and War, 1953-1961, a three-volume history of the Atomic Energy Commission. He also coauthored Nuclear Navy, 1939-1962, a history of Admiral Rickover and the US nuclear fleet. With History Associates he published Jessie Ball duPont, a biography of the prominent southern philanthropist. He has received the David D. Lloyd Prize from the Harry S Truman Library Foundation, the Distinguished Service Award from the Atomic Energy Commission, the Richard W. Leopold Prize from the Organization of American Historians, and the Henry Adams Prize and Franklin D. Roosevelt Award from the Society for History in the Federal Government. Dr. Hewlett attended Dartmouth and Bowdoin Colleges, and after serving with the US Army Air Corps in China during World War II, received his MA and Ph.D. in modern history from the University of Chicago.

Robert C. Williams is a cofounder of History Associates. He retired in the spring of 2003 as Vail Professor of History at Davidson College, where he served for twelve years as vice president for academic affairs and dean of the faculty. Dr. Williams is the author of numerous articles and books on Russian history, including Ruling Russian Eurasia: Khans, Clans, and Tsars; Russian Art and American Money, 1900-1940 (nominated by Harvard University Press for the Pulitzer Prize); Klaus Fuchs: Atom Spy; and Russia Imagined: Art, Culture, and National Identity, 1840-1995. His articles and book reviews have appeared in the Slavic Review, History and Theory, Canadian Slavonic Studies, and the American Historical Review. Dr. Williams has been an active member of the American Association for the Advancement of Slavic Studies and the American Historical Association. He has received grants and fellowships from the American Philosophical Society, the American Council of Learned Societies, and the George F. Kennan Institute for Advanced Russian Studies. Dr. Williams taught at Williams College and Washington University in St. Louis, where he was chair of the History Department and dean of University College. At Davidson, he received the Thomas Jefferson Award for outstanding service and teaching. Dr. Williams is a graduate of Wesleyan University and earned his MA in Russian studies and Ph.D. in history from Harvard University.