Kuczynski, Jürgen (1904-1997)(4)
Estate of Albert Einstein (New York)(1)
Foner, Philip Sheldon (1910-1994)(1)
Iggers, Georg G. (1926-2017)(1)
Iggers, Wilma Abeles (1921-)(1)
Labor Research Association (New York)(1)
Lincoln University (Oxford, Pa)(1)
Max-Planck-Institut für Geschichte (1956-2007)(1)
New School for Social Research (1919-1997) (1919-1997)(1)
State University of New York / Department of History (Buffalo, NY)(1)