Mormon History, Oct 7, 1845

Oliver Cowdery: Wrote Brigham Young 7 Oct. 1845 offering to go to Washington, D.C. on behalf of Mormons

[source: Quinn, D. Michael, The Mormon Hierarchy: Origins of Power, Appendix 6, Biographical Sketches of General Officers of the Church of Jesus Christ of Latter-day Saints, 1830-47, http://amzn.to/origins-power]