Soole, G. H (1937). "Field and the Big Hill". Factors in railway and steamship operation. Montreal: Canadian Pacific Railway. General Publicity Department. OCLC264115110. Archived from the original on 2012-03-14. Retrieved 2011-04-27.
Soole, G. H (1937). "Field and the Big Hill". Factors in railway and steamship operation. Montreal: Canadian Pacific Railway. General Publicity Department. OCLC264115110. Archived from the original on 2012-03-14. Retrieved 2011-04-27.
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Soole, G. H (1937). "Field and the Big Hill". Factors in railway and steamship operation. Montreal: Canadian Pacific Railway. General Publicity Department. OCLC264115110. Archived from the original on 2012-03-14. Retrieved 2011-04-27.