Constance McLaughlin Green won the 1963 Pulitzer Prize in history for her Washington, Village and Capital, 1800-1878. Among her other studies in social, economic, and technological history are The United States Army in World War II: The Technological Services; Eli Whitney and the Rise of American Technology; American Cities in the Growth of the Nation; The Rise of Urban America; and The Secret City, a History of Race Relations in the Nation's Capital. She has served as Chief Historian, Ordnance, in the U.S. Army Historical Division; as historian for the Research and Development Board, Office of the Secretary of Defense; and as head of the Washington History Project administered by The American University. Earlier she taught at Mount Holyoke College and Smith College and was Commonwealth Fund Lecturer at University College, University of London. Mrs. Green is a graduate of Smith and received an M.A. from Mount Holyoke, a Ph.D. from Yale University, and an honorary Litt.D. from Smith.

Milton Lomask's publications include Seed Honey: The Guggenheim Story, with chapters on the Daniel Guggenheim Fund for Promotion of Aeronautics, on Robert H. Goddard's rocket pioneering, and on jet propulsion centers at California Institute of Technology and Princeton. His Andrew Johnson: President on Trial was a History Book Club selection. Mr. Lomask teaches writing at Catholic University of America and formerly taught at New York University. Before World War II he was a newspaperman on the Des Moines Register, St. Louis Star-Times, and New York Journal-American. During the war he served with the Chemical Warfare Service of the U.S. Army. He is a graduate of the University of Iowa and received his M.A. from Northwestern University.