1. Palynological zonation and correlation of sixty-seven wells, eastern Canada;Barss;Geological Survey of Canada Paper,1979
2. Calder, J.H., 1979. Geology and resource evaluation of the Foord seam, Stellarton District, Pictou coalfield. Nova Scotia Department of Mines and Energy, Coal Task Force Report (internal), pp. 1–17.
3. Calder, J.H., 1985. Coal in Nova Scotia. Nova Scotia Department of Mines and Energy, C85-093501-6, pp. 1–79, Figs. 18, 19.
4. Calder, J.H., MacDonald, D.J., 1994. New developments in coal and coalbed methane in Nova Scotia. Nova Scotia Department of Natural Resources, Program and Summaries of 18th Annual Review of Activities, p. 28.
5. Calder, J.H., Gillis, K.S., MacNeil, D.J., Naylor, R.D., Watkins Campbell, N., 1993. One of the greatest treasures: the geology and history of coal in Nova Scotia. Nova Scotia Department of Natural Resources, Information Circular no. 25, pp. 1–42