----, "The Inner Life of Polish Jewry during the Sixteenth Century," Voskhod, 1900, Books II and IV.
----, "The Vernacular of the Polish-Lithuanian Jews during the Sixteenth and Seventeenth Century," Yevr. St., 1909, p. 1 et seq.
Harkavy, Hadashim gam Yeshanim. Appendix to Rabbinowitz's Hebrew translation of Grätz's History, vol. VII, Warsaw, 1899.
Schorr, Organizacya Żydow w Polsce ("The Organization of the Jews in Poland"), Lemberg, 1899.
----, Żydzi w Przemyźlu ("The Jews in Pshemyshl"), 1903.
Perles, Geschichte der Juden in Posen, 1865.
Balaban, Żydzi lwowscy, etc.
----, Dzieye Żydow w Krakowie.
----, "Jacob Pollak, the Father of Polish Rabbinism, and His Age," Yevr. St., 1912, p. 225 et seq.
----, "Die Krakauer Judengemeinde-Ordnung von 1595," Jahrbuch der Jüdisch-Literarischen Gesellschaft, vol. X, Frankfurt-on-the-Maine, 1913.