Caithness Family History, by John Henderson. Edinburgh, David Douglas, 1884.
Caithness, The County of—by John Home. Wick, W. Rae, 1907.
Calder's History of Caithness. Glasgow, Thomas Murray & Son, 1861.
Cat, History of the Province of—by Rev. Angus Mackay. Wick, Peter Reid & Co., Ltd., 1914.
Chalmers. Caledonia.
Chroniques Anglo-Normandes. Francisque Michel. Rouen, Ed. Frere, 1836.
Corpus Poeticum Boreale. Oxford, Clarendon Press, 1883.
Curie. Monuments of Caithness. Royal Commission's Report, 1911.
Curie. Monuments of Sutherland. Royal Commission's Report, 1912.
Dalrymple's Collections, (1705).