Judaism - including information on the Olim ("Ascenders") - may be found at: "Der Aufstieg": Dr. Nathan Birnbaum ZT"L, Ascent and Agudah By Rabbi Yosef Gavriel Bechhofer. Jess Olson: Nation, Peoplehood and Religion in the Life and Thought of Nathan Birnbaum, Ph.D. Dissertation, Stanford University, USA, 2006. Jess Olson: Nathan Birnbaum and Tuvia Horowitz in: Jewish History 17, (pp 1–29), 2003. (also 1st edn., vol. 3, pp. 1040–1042, 1971). Shanes, Joshua: Birnbaum, Nathan in: The YIVO Encyclopedia of Jews in Eastern Europe, Vol. I, (pp 186–187), New Haven, 2008. Kaplan, A.E. & Landau, M. (eds): Vom Sinn des Judentums, Frankfurt/M. 1925. Orlean, Y.L. and Hasofer, N. (eds):Yubileyum Bukh zum zektsiktn Giburtstug fun Dr. Nusn Birnboim. Yeshurun, Warsaw, 1925. Yiddish. Wistrich, R.S.: The Metamorphosis of Nathan Birnbaum in: The Jews of Vienna in the Age of Franz Joseph, (1990). Wistrich, R.: The Strange Odyssey of Nathan Birnbaum in: Laboratory for World Destruction.Germans and Jews in Central Europe, Lincoln, Neb./Jerusalem, 2007. Nathan Birnbaum, “In bondage to our fellow Jews”, 1919 from Nathan Birnbaum, "Series of Essays on Agudas Yisroel", London, 1944 reproduced in Michael Selzer, editor, “Zionism Reconsidered”, Macmillan, London, 1970. External links The personal papers of Nathan Birnbaum are kept at the Central Zionist Archives in Jerusalem. The notation of the record group is A188. First Yiddish Language Conference Tshernovits First Yiddish Language Conference By Nathan Birnbaum The Call, a digitized newspaper published by Birnbaum, at the Leo Baeck Institute, New York 1864 births 1937 deaths Writers from Vienna Austrian Orthodox Jews 19th-century Austrian people Jewish philosophers Austrian philosophers Austrian Zionists Baalei teshuva Yiddish-speaking people