The Seder HaDorot or "Book of Generations" (completed 1725, published 1769) by Lithuanian Rabbi Jehiel Heilprin (1660–1746) is a Hebrew-language chronological work that serves as a depot of multiple Hebrew language chronological books and manuscripts. The work presents all given dates in the Hebrew calendar format.As well, Heilprin analyzed alternating and sometimes conflicting dates to produce a final decision and/or at times presents two plausible dates for a given event. Source: Wikipedia (en)