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Kuczynski, Jürgen (1904-1997)(2)
De Haan, Richard(1)
Estate of Albert Einstein (New York)(1)
Feinglass, Abe(1)
Foner, Philip Sheldon (1910-1994)(1)
Foner, Roslyn(1)
Labor Research Association (New York)(1)
Lincoln University (Oxford, Pa)(1)
Nathan, Otto(1)