PORTERFIELD, JAMES D. “INTRODUCTION.” The Boomer: A Story of the Rails, by Harry Bedwell and James D. Porterfield, NED - New edition ed., University of Minnesota Press, MINNEAPOLIS; LONDON, 1942, pp. vii-xviii, www.jstor.org/stable/10.5749/j.cttttr9f.3. Accessed 4 June 2020.
PORTERFIELD, J. (1942). INTRODUCTION. In Bedwell H. & Porterfield J. (Authors), The Boomer: A Story of the Rails (pp. Vii-Xviii). MINNEAPOLIS; LONDON: University of Minnesota Press. Retrieved June 4, 2020, from www.jstor.org/stable/10.5749/j.cttttr9f.3
PORTERFIELD, JAMES D. "INTRODUCTION." In The Boomer: A Story of the Rails, by Bedwell Harry and Porterfield James D., Vii-Xviii. MINNEAPOLIS; LONDON: University of Minnesota Press, 1942. Accessed June 4, 2020. www.jstor.org/stable/10.5749/j.cttttr9f.3.
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