Centre de Documentation sur les Migrations humaines

 Centre for Urban History, University of Leicester
 Center for Study of Working Class Life, Stony Brook University, New York
 The Immigration History Research Center and Archives, University of Minnesota
 Dr. Lutz Vogel, Hessisches Landesamt für geschichtliche Landeskunde

  Department of History, Florida State University

 Department of History, Michigan State University
 Institute of Urban History, Stockholm