John D. Anderson, Jr., is a member of the Department of Aeronautical Engineering at the University of Maryland, College Park. He is the author of several books and articles including, Fundamentals of Aerodynamics (McGraw-Hill Series Aeronautical and Aerospace Engineering, 1991); Computational Fluid Dynamics: The Basics With Applications (McGrawHill Series in Mechanical Engineering, 1995); and A History of Aerodynamics and Its Impact on Flying Machines (Cambridge University Press, 1997).

Mark D. Bowles is vice president of History Enterprises, Inc. and is finishing his Ph.D. dissertation in the program of the history of technology, science, and medicine at Case Western Reserve University. His research focuses on an analysis of information overload as a multi-disciplinary problem from 1945 to the present. He can be reached at mdb@HistoryEnterprises.com.

Glenn E. Bugos is head of The Prologue Group, a company specializing in the study of the history of high technology. He has worked on supersonic flight, having written a history of the development of the McDonnell F-4 Phantom II, Engineering the F-4 Phantom II: Parts into Systems (Naval Institute Press, 1996).

Andrew J. Butrica, a graduate of the doctoral program in the history of science and technology at Iowa State University, is a research historian and author of numerous articles and papers on the history of electricity and electrical engineering in the United States and France and the history of science and technology in nineteenth-century France. He is the author of a corporate history, Out of Thin Air: A History of Air Products and Chemicals, Inc., 1940-1990, published by Praeger in 1990; To Seen the Unseen: A History of Planetary Radar Astronomy, published as SP-4218 in the NASA History Series in 1996; and editor of Beyond the Ionosphere: Fifty Years of Satellite Communication (NASA SP-4217, 1997).

Steven T. Corneliussen, a longtime student of NACA history, is an editor and writer at Jefferson Lab, a national particle physics laboratory near NASA Langley Research Center, Hampton, Virginia.

Vinginia P. Dawson is founder and president of History Enterprises, Inc., located in Cleveland, Ohio. The company specializes in producing business and institutional histories in a variety of print and electronic formats and organizing archives. She is author of Engines and Innovation: Lewis Laboratory and American Propulsion Technology (NASA-SP-4306).

Henry C. Dethloff is a member of the History Department at Texas A&M University. He is the author of numerous books and articles including, "Suddenly Tomorrow Came. . . ". A History of the Johnson Space Center, 1957-1990 (NASA SP-4307, 1993); Texas A&M University: A Pictorial History, 1876-1996 (Texas A&M University Press, 1996); and several other works.

Donald C. Elder teaches history at Eastern New Mexico University, Portales. He has published several articles on space flight and his book, Out from the Behind the Eightball: A History of Project Echo, appeared in 1995 from Univelt, Inc., in the American Astronautical Society History Series.

Michael H. Gorn is an independent scholar of aerospace technology. He has written The Universal Man: Theodor von Kármán's Life in Aeronautics (Smithsonian Institution Press, 1993), and is presently working on a biography of Hugh L. Dryden, NASA deputy administrator in the 1960s, and a history of flight research.

James R. Hansen is a member of the Department of History, Auburn University, Auburn, Alabama. He has written two volumes on the history of the Langley Research Center. The first of these is Engineer in Charge: A History of the Langley Aeronautical Laboratory, 1917-1958 (NASA SP-4305, 1987). The second is The Spaceflight Revolution at NASA Langley: From the Sputnik Crisis to the Lunar Landings (NASA SP-4308, 1995). He has also published From the Ground Up: The Autobiography of an Aeronautical Engineer (Smithsonian Institution Press, 1988), with Fred E. Weick, and several articles.

W. D. Kay is a political scientist at Northeastern University in Boston, Massachusetts. He is the author of Can Democracy Fly in Space? The Challenge of Revitalizing the U.S. Space Program (Praeger, 1995).

W. Henry Lambright is on the faculty of The Maxwell School of Citizenship and Public Affairs, Syracuse University. He has published widely on science and technology policy, including, Governing Science and Technology (Oxford University Press, 1976); Shooting Down the Nuclear Plane (Bobbs-Merrill, 1976); Technology Transfer to Cities (Westview Press, 1979); and Presidential Management of Science and Technology: The Johnson Presidency (University of Texas Press, 1985). He has just published Powering Apollo: James E. Webb of NASA (Johns Hopkins University Press, 1995), an administrative biography of NASA Administrator James E. Webb who served between 1961 and 1968.

John M. Logsdon is Director of both the Center for International Science and Technology Policy and the Space Policy Institute of George Washington University's Elliott School of International Affairs, where he is also Professor of Political Science and International Affairs. He holds a B.S. in physics from Xavier University and a Ph.D. in political science from New York University. He has been at George Washington University since 1970, and previously taught at The Catholic University of America. Dr. Logsdon's research interests include space policy, the history of the U.S. space program, the structure and process of government decision-making for research and development programs, and international science and technology policy. He is author of The Decision to Go to the Moon: Project Apollo and the National Interest (MIT Press, 1970), general editor of Exploring the Unknown: Selected Documents in the History of the U.S. Civil Space Program, three volumes to date, and has written numerous articles and reports on space policy and science and technology policy.

Pamela E. Mack is associate professor of history at Clemson University, Clemson, South Carolina. A Ph.D. in the history of technology from the University of Pennsylvania, Philadelphia, she is the author of the seminal study, Viewing the Earth: The Social Construction of the Landsat Satellite System (MIT Press, 1990), and has written several articles in aerospace history.

Anne Millbrooke is an historian at Montana State University, Bozeman. Formerly, she served as archivist and historian with United Technologies, Inc.

Joseph N. Tatarewicz teaches history at the University of Maryland, Baltimore County and has a substantial record of publication in history of science and technology, specializing in space science and planetary exploration. He is the author of Space Technology and Planetary Astronomy (Indiana University Press, 1990) and is the author of the forthcoming history entitled Exploring the Solar System: The History of Planetary Geosciences Since Galileo, which will be published by the Johns Hopkins University Press.

Lane E. Wallace is an independent aviation writer. She is the author of Airborne Trailblazer. Two Decades with NASA Langley's Boeing 737 Flying Laboratory (NASA SP-4216, 1994), Flights of Discovery: 50 Years of the Dryden flight Research Center (NASA SP-4309, 1996), and numerous articles.

Jannelle Warren-Findley is a member of the Department of History at Arizona State University, Tempe. She is the co-editor of Exploring the Unknown: Selected Documents in the History of the US Civil Space Program, Volume I, Organizing for Explaration (NASA SP-4407, 1995).