Ukrainian Zionist leader (1867-1933) who participated in the First Zionist Congress in 1897 and was a key organizer of the Jewish delegation to the 1919 Paris Peace Conference. Six untranslated ALSs in Cyrillic, all signed "Your Leo," penned on 5.5 x 3.75 postcards featuring portraits of great composers, dated from July 28, 1899 to August 4, 1899. All are written to Paula Rosenblum, who would later become his wife. In overall fine condition.