Who Am I? (A Church History Mystery)

I was with the Prophet Joseph Smith when we were visited by John the Baptist and given the Aaronic Priesthood. I also wrote down some of the Book of Mormon as Joseph translated it. Who am I? See JS—H 1:66–69 for help in solving the mystery.

John the Baptist Appearing to Joseph Smith and Oliver Cowdery © 2000 Del Parson, do not copy, Oliver Cowdery Portrait by Lewis A. Ramsey, Joseph Smith Translating the Book of Mormon by Del Parson © 1996 IRI