John Taylor, in hiding at the home of monogamist John W. Woolley, gives a revelation about plural marriage: "I have not revoked this law nor will I for it is everlasting." Never formally presented to the Twelve, but Apostle John W. Taylor discusses the 1886 revelation in meetings on 2 Oct. 1889, 30 Sept. 1890, 1 Apr. 1892, and 22 Feb. 1911. On 15 July 1933 the First Presidency accepts custody of the 1886 revelation's original text which is in John Taylor's handwriting. The 1886 revelation has never been officially published (and its existence has been officially denied). Photocopies of the 1886 revelation have been unofficially published, and Apostle Melvin J. Ballard writes that it is definitely the handwriting of LDS president John Taylor.
[Source: The Mormon Hierarchy - Extensions of Power by D. Michael Quinn, [New Mormon History database (http://bit.ly/NMHdatabase)]]