![Letters to the Editor:]()
Letters to the Editor:Fred J. Borch, Richard J. Hughes, William L. Guy, John A. Burns, John J. Mckeithen, Warren P. Knowles, Edmund G. Brown, Grant Sawyer, John Dempsey, Miriam K. Ringo, Albert Alexander, Paul Alpert, Overton H. Taylor, H. Peter Gray, Charles E. Wagner, Wilson R. Armstrong, George H. Phillips and Alfred Morris · Challenge · 1966