OP says he witnessed JS translating the BOA.

Date
Jul 10, 1859
Type
Speech / Court Transcript
Source
Orson Pratt
LDS
Hearsay
Scribed Verbatim
Direct
Reference

Orson Pratt, "Personal Reminiscences and Testimony Concerning the Prophet Joseph and the Church, Etc." (10 July 1859), Journal of Discourses (Liverpool: Amasa Lyman, 1860), 7:176

Scribe/Publisher
Journal of Discourses
People
Orson Pratt, Joseph Smith, Jr.
Audience
Latter-day Saints, Reading Public
Transcription

I then became intimately acquainted with the Prophet Joseph Smith, and continued intimately acquainted with him until the day of his death. I had the great privilege, when I was in from my missions, of boarding the most of the time at his house, so that I not only knew him as a public teacher, but as a private citizen, as a husband and father. I witnessed his earnest and humble devotions both morning and evening in his family. I heard the words of eternal life flowing from his mouth, nourishing, soothing, and comforting his family, neighbors, and friends. I saw his countenance lighted up as the inspiration of the Holy Ghost rested upon him, dictating the great and most precious revelations now printed for our guide. I saw him translating, by inspiration, the Old and New Testaments, and the inspired book of Abraham from Egyptian papyrus.

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