Helen Mar Kimball Whitney writes that her husband Horace K. Whitney copied Section 132.

Date: Jul 15, 1885
Type: Periodical
Source: Helen Mar Kimball Whitney
LDS
Hearsay: 2nd Hand
Late
Reference: Helen Mar Kimball, "Scenes and Incidents at Winter Quarters," Woman's Exponent 14, no. 4 (July 15, 1885): 31
Scribe/Publisher: Woman's Exponent
People: Brigham Young, Helen Mar Kimball Whitney, Newel K. Whitney, Horace K. Whitney
Audience: Reading Public; PDF
Transcription: Sunday, the 14th, my husband wrote: "By father's request I went and copied an important document, which took me the greater part of the day and into the night."
The revelation on plural marriage was the "document" referred to, the bishop having the only one in existence, which he afterwards gave to President Young, retaining a copy.
Source Link: https://contentdm.lib.byu.edu/digital/collection/WomansExp/id/12614
Citations in Mormonr Qnas: Doctrine and Covenants 132 and Polygamy