Joseph Smith revises Genesis (Moses 6:52a-68; 7:1-8:12), dictating also the "Prophecy of Enoch" . This portion of Old Testament Manuscript #1 (Community of Christ Library-Archives) is in the handwriting of John Whitmer and Sidney Rigdon (Matthews 1975, 65-66, 69). John Whitmer says the revelation was received in Fayette (NY) shortly after the arrival of Sidney Rigdon in early December 1830. Afterwards, according to Whitmer, "Joseph and Sidney went to the several churchs preaching and prophesying wher=ever they went".
[Vogel, Dan, Early Mormon Documents, Appendix B: Chronology, 1771-1831, http://amzn.to/T5nY8w]