Contributing Authors Include Clayton F. Bane, Philip S. Rand, Jim Kirk, L. P. Neal, William B. Valentine, Stephen S. Peschel, Gerald W. Loomis, Charles E. Lillie And E. H. Marriner.

Contributing Authors Include William I. Orr, E. Miles Brown, Edwin T. Kephart, Edward Marriner, Keith S. Champlin And Dale Hileman.

Contributing Authors Include Ernest F. Hiser, Jr., Howard Burgess, R. R. Hay, Edward Rasmussen, S. T. McNeal, Otto L. Woolley, Edward J. Brauner, And Ed Marriner.

Contributing Authors Include Theodore G. Dell, E. Miles Brown, R. H. Mitchell, William I. Orr, Harley E. Saltmarsh, Robert V. Morris, C. W. Gwyn, And Frank Heubner.

Contributing Authors Include Henry G. Elwell, Jr., Leroy W. May, Jr., Paul Lee, J. J. Hoefer, Louis M. Desmaras, G. Franklin Montgomery, R. W. Johnson, Norman Gertz, And R. H. Mitchell.

Contributing Authors Include F. C. McDaniel, Ray Fulton, William C. Ryder, Louis L. Brent, Robert M. See, Herb S. Brier, Wilfred S. Scherer, Clifford C. Johnson, R. A. Robberge And R. W. McConnell.

Contributing Authors Include E. Miles Brown, W. M. Scherer, Edwin Kephart, G. Franklin Montgomery, William Wellman, And Fay Gehres.

Contributing Authors Include Lawrence LeKashman, A. W. Horst, George H. Floyd, Louisa B. Dresser, Wilfred M. Scherer And E. W. Johnson.

Contributing Authors Include Clifford C. Johnson, Howard Burgess, R. R. Hay, J. F. Bollinger, And Kenneth R. Waltz.

Contributing Authors Include John E. Stacy, Clayton F. Bane, Edward J. White, Henry W. Yahnel, S. G. Reque, W. L. Werden, D. Ypey, A. M. Clarke, Donald E. Norgaard, And Wilfred Scherer.

Contributing Authors Include W. M. Scherer, P. S. Rand, E. L. Battey, G. L. Countryman, Romulo Aleu And Mario Flaque.

Contributing Authors Include George Jacobs, Herb Becker, Robert H. Weitbrecht, Dale L. Hileman, R. R. Hay, J. N. Brown, Van Court Hare, Jr., Richard Graham, And Stephen J. Luisser.

Contributing Authors Include Jack Grimes, John E. Pitts, Jr., Walter A. Brauer, Dick Saunders, W. A. Sperry, George Brown, And Clifford Paterno.

Contributing Authors Include James Freund, T. C. Goodson, George Jacobs, Jack N. Brown, Herb Becker, Dale Hileman, And Helen V. Ferguson.

Contributing Authors Include Clifford C. Johnson, Howard Burgess, R. R. Hay, J. F. Bollinger, Kenneth R. Waltz, And Many Others.

Contributing Authors Include Robert Schlesinger, Wilfred M. Scherer, Howard Burgess, Robert Hertzberg, And Clifford C. Johnson.

Contributing Authors Include Joseph M. Boyer, Robert C. Cheek, Donald H. Rogers, Adelbert Kelley, Wilfred M. Scherer, And Charles M. Garvey.

Contributing Authors Include A. W. Kurtz, G. Franklin Montgomery, J. H. Nelson, R. W. Schoening, William R. Wellman, Hartland B. Smith And R. H. Mitchell.

Contributing Authors Include T. A. Prewitt, Frank A. Mohler, W. A. M. Wood, Robert S. Stein, William S. Grenfell, Robert B. Kuehn, John T. Frye, Walter H. Campbell, Edmund H. Marriner, L. J. Jensen, John T. Frye And Howard Burgess.

Contributing Authors Include Roth Jones, Arnold Ross, John Althouse, Howard Burgess, C. Tierney, Edmund H. Marriner, Jack A. Offins, I. Pickell, And James Gray.

Contributing Authors Include Frank C. Jones, Richard C. Littler, Merritt Kirchhoff, David D. Bulkley, And Many Others.

Contributing Authors Include C. O. Bishop, Paul H. Lee, William T. Clark, Gordon H. Millar, William Wollin, William S. Grenfell, William R. Wellman, And H. M. Lem.

Contributing Authors Include Edwin T. Kephart, John Williams, Rodney W. Johnson, And William I. Orr.

Contributing Authors Include Oliver P. Ferrell, W. M. Scherer, William I. Orr, Merritt Kirchhoff, David D. Buckley, And John W. Waterloo.

Contributing Authors Include R. H. Rales, E. L. Nielsen, Wilfred M. Scherer, Allen A. Engleman, Sylvia A. Frank, Oliver P. Ferrell, J. H. Owens, Harry Harrison, And Rex Bosman.