Correspondents include Voi Shan Division, C.W. Bert, Robert T. Jones, Reader's Digest, Olegario Perez, Jan Roskam, Aluminum Company of America, Lukens Steel Company, J.M. Pettit, D.E. Baesel, Leslie B. Williams, E.L. Cook, McGraw-Hill Book Co., Carol A. Bittenbender, David R. Reyes-Guerra, Harry E.M. Stone, Nancy Archer, J. Horsley, G.C. Beakley, Gerald Corning, George H. Tweney, R.W. Taylor, Bill Stuenkel, Tri-State Offset Company, Bill Evans, L.J. Fila, Sargent Welch Scientific, J. Gorman.