By Seymour Drescher (Professor of History, Professor of History, University of Pittsburgh), Stanley L. Engerman (Munro Professor of Economics, Munro Professor of Economics, University of Rochester)
By Patrick Manning (Professor, University of Pittsburgh)
By Anthony Duncan (Professor of Physics, Department of Physics 1nd Astronomy, University of Pittsburgh)
By Mark Wilson (Distinguished Professor of Philosophy, Distinguished Professor of Philosophy, University of Pittsburgh)
