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"Who's Who in Polish America." Ed. Rev. Francis Bolek; New York: Harbinger House; 1943. 5,000 short biographies of notable Polish-Americans, both living and historical. They are listed alphabetically, by state, and by profession. K30
"Naturalized Jews of the Grand Duchy of Posen in 1834 and 1835." E.D.Luft, Avotaynu, 2004. Originally published 1836, containing about 5,000 Jewish names (~ 10% - 20% of Jewish population) in County of Posen, Prussia, now Poznan, Poland. A15