History of Joseph Smith
Times and Seasons, vol. 3, p. 832
Church of Jesus Christ of Latter Day Saints
Continued.
On the fifteenth day of April, eighteen hundred and twenty nine, Oliver Cowdery came to my house, until when I had never seen him. He stated to me that having been teaching school in the neighborhood where my father resided; and my father being one of those who sent to the school; he had went to board for a season at my father's house, and while there the family related to him the circumstance of my having received the plates, and accordingly he had come to make enquiries [inquiries] of me.
Two days after the arrival of Mr. Cowdery, (being the 17th of April,) I commenced to translate the Book of Mormon, and he commenced to write for me, which having continued for some time, I enquired [inquired] of the Lord, through the Urim and Thummim, and obtained the following revelation:-