^Yeoman, R.S.; Bressett, Kenneth; Bowers, Q. David; Garrett, Jeff (2019). A Guide Book of United States Coins (72nd ed.). Pelham, Alabama: Whitman Publishing. pp. 109–110, 155, 210, 234–235.
^Yeoman, R.S.; Bressett, Kenneth; Bowers, Q. David; Garrett, Jeff (2019). A Guide Book of United States Coins (72nd ed.). Pelham, Alabama: Whitman Publishing. pp. 109–110, 155, 210, 234–235.