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.
[1] 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.
This work consists of three independent volumes or parts: The whole work is followed by notes on the Talmud, also arranged in alphabetical order.
Of Heilprin's numerous other works mentioned in the Seder HaDorot, the only one which has been published is Erke HaKinnuyim, a dictionary of synonyms and homonyms occurring in the Bible, Talmud, and other works, chiefly Kabalistic (Dyhernfurth, 1806).