Correspondence with various organizations and bodies, 1940-1945 - Correspondence with Zionist movements, rescue organizations, embassies, international Jewish organizations, and more; -Letters, reports, protocols and messages mainly regarding the rescue of the persecuted Jews in German occupied Europe; some letters are written in encrypted language and contain hidden messages; - Correspondence including reports regarding the Jewish Order Police in the Warsaw Ghetto signed by S. Silberstein, Henryk Nadel and H. Auerswald (translated into Hebrew); - Copy of a protocol signed by B. Zabludowski, Dr. H. Glicksberg, A. Gancwajch, D. Sternfeld and I. Levin (translated into Hebrew), 1941; - Letter from A. L. Kubowitzki to Dr. Silberschein, 1940; - Letter from Egosi to Dr. Silberschein regarding complications arising concerning the aliya (emigration) of groups of young Jews to Eretz Israel (the British Mandate of Palestine), 18 April 1943; - Original letter, handwritten in German with encrypted content, from Frumka Plotnicka to Dr. A. Silberschein in Geneva, 07 May1943; the address of the sender on the envelope is listed as M. Perelstadt, Bendsburg O/S, Langer-Weg 24; - Typewritten copy of a report in German signed by "Gisi" (Fleischmann?), partly encrypted, regarding the rescue of Jews in Slovakia, 18 June 1943; - Typewritten copy of a letter in French sent by Dr. A. Silberschein to the Apostolic Nuncio Monsignor Filippo Bernardini in Bern asking him to help Jewish refugees obtain visas by intervening with the Peruvian consul, J.M. Barre, 27 August 1943; - Collection of typed copies of letters addressed to "Natan" by multiple senders, among them Gisi Fleischmann, 1943; each page bears the stamp of the Hechalutz office in Geneva; - Circular sent by the JNF (Jewish National Fund) to the branches of the JNF in Switzerland, 15 September 1943. - Letter sent to the Czechoslovakian representative at the League of Nations by D. Mackillop of the British Embassy in Bern on behalf of Nathan Schwalb, 06 December 1943; - Copies of letters sent by Izchak Katzenelson from Vittel, 09 October 1943; - Original of a handwritten encrypted letter in German signed by "Henri" with an additional signature in Hebrew (Silberschein?); - Typed copy of an encrypted letter from Vittel, including a list of Hebrew words and their meanings in German, 01 January 1944; - Typed copy of a report issued by the British Section of the World Jewish Congress regarding its activities, 13 March-09 April 1945, signed by M. Frankel, 09 April 1945; - Copy of a certificate issued by the Legal Department of the Swedish Ministry for Foreign Affairs regarding protection for Gilel Hillel Storch during his stay in Berlin, 16 April 1945.