Swineford, A. P. (1871). Swineford's history of the Lake Superior iron district, its mines and furnaces (2d ed.). Mining Journal Office.
Chicago-referens (17:e uppl.)Swineford, A. P. Swineford's History of the Lake Superior Iron District, Its Mines and Furnaces. 2d ed. Marquette: Mining Journal Office, 1871.
MLA-referens (8:e uppl.)Swineford, A. P. Swineford's History of the Lake Superior Iron District, Its Mines and Furnaces. 2d ed. Mining Journal Office, 1871.
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