The File is a collection of documents from a major dispute involving a number of American college professors, mainly mathematicians, statisticians,and sociologists. The controversy was ignited by the mathematician Serge Lang's reaction to a questionnaire, The 1977 Survey of the American Professoriate, distributed by E. C. Ladd of the University of Connecticut and S. M. Lipset of Stanford. The ensuing discussion - in part acrimonious and personal - soon involved a large group of active and passive participants, and included issues such as survey techniques, evaluation of academic work, public and political honesty, and McCarthyism at Harvard.