Dr. Abraham Silberschein Archive: Correspondence with Poalei Zion party members, Agudat Israel and heads of pioneer youth movements in Warsaw regarding the sending of parcels of food and rescue passports Three volumes arranged in alphabetical order: 1. A-J; 2. K-O; 3. P-Z. Also in the file: - Letters from Frumka Plotnicka, Zivia Lubetkin, Stefan Graiek, Eliezer Galar, Yosef Sack, Joseph Jaszunski, Jochanan Morgenstzern, Weinberg, and Nathan Eck, 1942.