Recherche dans la collection - Plan of coal mine owned by Abriel and Nichol, Three Hills, Alberta. Sale No. 635 comprising L.S.16, Sec.26. Tp.31. R.24. W4thM. Operated by Albert Trentham. Surveyed 19th Sept. 1912 by O.S. Finnie, D.L.S., Inspecting Engineer, M.L. and Y. Branch, Department of Interior, Ottawa. Survey extended June 8th 1913 ... July 25th 1916. [cartographic material]