“Notes near St Fillans : Cup-Marked Stones, Old Burying Grounds at Kindrochet and Drumnakill, Curing Stone or Charm, and Notice of a Flint Knife found on the Farm of North Pet, Tarland, Aberdeenshire”, PSAS, vol. 22, pp. 23–26, Nov. 1888, doi: 10.9750/PSAS.022.23.26.