Robert H. Beck was a professor of history and educational philosophy at the University of Minnesota.
Harold C. Deutsch was a professor of history at the University of Minnesota.
Philip M. Raup is a former professor of applied economics at the University of Minnesota.
Arnold M. Rose was a professor of sociology at the University of Minnesota.
John G. Turnbull was a professor of economics at the University of Minnesota.
Jean Belden Taber was a research assistant at the University of Minnesota.
