1. Rubin Saltzman to President Roosevelt Urging Trade Embargo of Hitler, November 1938 (correspondence) Collection: International Workers’ Order (IWO) and Jewish People's Fraternal Order (JPFO) Set: Popular Front Years Location: Washington, District of Columbia, United States New York, New York, United States Date: 1938-11-17 Format: Image Creator: Zaltsman, R. (Reʾuven) (Rubin Saltzman, Reuben Zaltzman) Recipient: Roosevelt, Franklin D. (Franklin Delano), 1882-1945 Organization: Jewish Section, International Workers Order