Board of Visitors(continued from page one)Other members of the board are:Dr. Kenneth R. Crispell of the University of Virginia; Dr. Martin M. Cummings of the National Library of Medicine; James R. Felts Jr. of the Duke Endowment; Dr. John H. Knowles of the Rockefeller Foundation; Dr. Ben N.Miller of Columbia, S.C.; Raymond D. Nasher of Dallas, Tex.; Dr. William R. Pitts of Charlotte; Dr. Frank W. Putnam of Indiana University; Dr. June S. Rothberg of Adelphi University; Dr.Mitchell W. Spellman of Charles R. Drew Postgraduate Medical School in Los Angeles; and Richard J. Stull of the American College of Hospital Administrators.