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Harper Lake Kiosk Information (Back) <br />A farmer is collecting hay with a raking device in Louisville in 1909. (Photo courtesy of the Carnegie <br />Branch Library for Local History). <br />References: <br />http: / /lib.colostate.edu/ research /agbib /project- background.html <br />https: / /en.wikipedia.org /wiki /Coal mining <br />Bacon, Bridget. 2015. The Harpers and Harper Lake: How One Family Left its Mark on Louisville, <br />Colorado. The Louisville Historian, Issue 105. <br />Lindquist, J. Peter. 2010. The Untold Story of Louisville's First Years. The Louisville Historian, Issue 88. <br />