Correspondents include Larry Johnson, E.F. Masur, Olaf Storaasli, Don Amiotte, Ronald Calgaard, Richard L. Lowery, U.S. Government Printing Office - Division of Public Documents, Excerpt Editor - Reader's Digest, Richard Hunter, Minkus Publications, Inc., Environmental Protection Agency - Contracts Management Division, George J. Stathakis, Andrea Dinsmore, James B. Pearson, James R. Schlesinger, George Tweney, George S. Schairer, Don Ahrens, J. Hutchinson, V. Tein, E.H. Roberts, T.W. Lippert, C.J. Mosbacher, R. Myron Rosebrook, John Wherry, Glen W. Zumwalt, George H. Tweney, A.H. Ahlquist, Lubbock Avalanche-Journal, A.G. Chambers, Ken Ruzak, John Fuller, Ted Balhr, McGraw-Hill Book Co., Paul Miller, Lukens Steel Company, N.H. Smith, State Board of Engineering Examiners, Larry Johnson, Carl L. Courter, Robert J. Baldwin, Contracting Officer Mailstop 146 National Aeronautics and Space Administration Langley Research Center, James Pearson, Vice Chancellor Argersinger, Air Force Film Library Center, The Information Office U.S. Geological Survey, Bernard Loeffke, R.K. Ellingsworth, Stuart E. Swartz, Ambassade de France, R.A. Britton, David Kohlman.