Brant A. Gardner gave 1800s background to Joseph's use of Seer Stones.
Brant A. Gardner, "Joseph the Seer—or Why Did He Translate With a Rock in His Hat?," address at 2009 FairMormon Conference, accessed June 22, 2021
Brant. A. Gardner gives 19th-century background to JS's use of a seer stone in a hat to translate the plates at a FairMormon Conference.