MacLean, T. A. Lode Mining in Yukon: An Investigation of Quartz Deposits in the Klondike Division; Canada Department of Mines. Ottawa: Government Printing Bureau, 1914. First Edition. 
Paper wrapper, some chipping at the ends, ex college library markings. 6 1/2 x 9 1/2, two large folding color maps at back (one unopened), 205 pages plus index, 40 b/w plates, 35 text illustrations, 6 maps total. The two large folding maps are Mining Districts in Yukon & Dawson Mining District.
Forty b/w plates from photographs showing mining activity in Yukon and Dawson, with maps. The second map is unopened and we have left it that way rather than taking a photo of it. The b/w plates (see photos) do not take up the entire page but are centered in the page - we left one uncropped to show you the scale.