… College, 1986; M.A., Ph.D., Boston University, 2001) is Professor of History at the University of Massachusetts … Nova de Lisboa, Portugal. Walker was a visiting professor at the Universidade Aberta in Lisbon (1994-2003) … Lehrman Center 203.432.9238 gilder.lehrman.center@yale.edu Online United States Wednesday, November 3, 2021 Off … Gilder …