Jews History Holocaust, Jewish (1939-1945) Intellectual life Social aspects Yiddish language Attitudes Borochov, Ber, -- 1881-1917 Encyclopedias and dictionaries, Yiddish Ethinic relations Foreign public opinion, American Foreign relations Historiography History and criticism Holocaust, Jewish (1939-1945)-Foreign public opinion, American Holocaust, Jewish (1939-1945)-Historiography Influence Influence (Literary, artistic, etc.) Jews -- Russia -- Intellectual life -- 20th century Jews-United States-Attitudes Niger, Samuel, -- 1883-1955 Sh?if, Na?um, -- 1879-1933 United States-Ethinic relations United States-Foreign relations-1933-1945 Yiddish language -- Russia -- History -- 20th century Yiddish language -- Social aspects -- Russia Yiddish literature