Lake Superior Iron Resources by C. H. Schwartz, Paul A. Wasson, Howard H. Heady, Donald W. Frommer, Michael George Zabetakis, Willis A. Calhoun, T. E. Hill, Raynard V. Lundquist, N. Chardoul, R. F. Abernethy, Miles E. Tyrrell, D. W. Bridges, Alton B. Whitehead, Eliot J. White, Foster Fraas, George E. Fish, Howard E. Powell, Jerry B. F. Champlin, Judy W. Montoya, Richard Clarke Corey, Sebastian J. Aresco, Sidney Katell, C. P. Haller, Eben L. Singleton, Gilbert M. Farrior, John H. Faber, Oren C. Baptist, R. G. Havens, Carlon Sanford Land, Paul Wellmanm, Leonard F. Heising, R. E. Lubker