Preston Nibley republishes JS 1842 Wentworth Letter in IE, including First Vision account, in full.
Preston Nibley, "The Wentworth Letter," Improvement Era 65, no. 2 (February 1962): 96–97, 114, 116, 118
I retired to a secret place in a grove and began to call upon the Lord, while fervently engaged in supplication my mind was taken away from the objects with which I was surrounded, and I was enwrapped in a heavenly vision and saw two glorious personages who exactly resembled each other in features, and likeness, surrounded with a brilliant light which eclipsed the sun at noon-day. They told me that all religious denominations were believing in incorrect doctrines, and that none of them was acknowledged of God as his church and kingdom. And I was expressly commanded to “go not after them,” at the same time receiving a promise that the fulness of the gospel should at some future time be made known unto me.