Peterkin, A. “V. Narrative of Human Remains, a Comb, &C., Which Were Dug Out of the Burgh, or Circular Fort, of Burgar, in the Parish of Evie, Orkney. Communicated by A Peterkin, Esq”. Archaeologia Scotica, Vol. 3, Nov. 1832, pp. 44-45, http://journals.socantscot.org/index.php/arch-scot/article/view/206.