1. The Wilsford Shaft
2. Australian Radio-carbon Dates
3. Matthews B. 1964, The Late-Pleistocene glaciation and deglaciation of northernmost Ungava, Quebec: Unpub. Reports presented to the Arctic Institute of North America, Washington Office, p. 94.
4. Lamont Radiocarbon Measurements VIII
5. On the Exploration of Prehistoric Sepulchral Remains of the Bronze Age at Bleasdale;Dawkins;Trans. Lanes. and Ches. Antiq. Soc.,1900