. . "Dr. Abraham Silberschein Archive: Exchange of letters with Yitzhak Weisman in Lisbon regarding diplomatic assistance to Jewish refugees in Portugal and Spain and regarding organizing the work done by the World Jewish Congress (WJC) and the Jewish Agency i"@eng . "Dr. Abraham Silberschein Archive: Exchange of letters with Yitzhak Weisman in Lisbon regarding diplomatic assistance to Jewish refugees in Portugal and Spain and regarding organizing the work done by the World Jewish Congress (WJC) and the Jewish Agency i"@eng . .