Coles, Frederick R. “Notices of the following:: (1) the Camp at Montgoldrum and Other Antiquities in Kincardineshire; (2) a Stone Circle Called The Harestones in Peeblesshire; (3) a Cairn and Standing Stones at Old Liston, and Other Standing Stones in Midlothian and Fife; (4) of Some Hitherto Undescribed Cup- and Ring-Marked Stones; And (5) Recent Discoveries of Urns”. Proceedings of the Society of Antiquaries of Scotland, vol. 37, Nov. 1903, pp. 193-32, doi:10.9750/PSAS.037.193.232.