Thorold J. Tronrud. Guardians of Progress: Boosters and Boosterism in Thunder Bay, 1870–1914. Thunder Bay: Thunder Bay Historical Museum Society, 1993. Pp. 74. Black and White Illustrations, index. 9.95 (plus 2.00 postage) - High, Steven (Urban History Review / Revue d'histoire urbaine, 1996)