1. Geological map of a portion of the Sudbury mining region, districts of Algoma and Nipissing, Ont. (Sudbury map) [cartographic material] Yale Public content 1904. 2018-06-19T19:00:28Z. 2018-09-05T20:09:25Z. Barlow, Alfred E. (Alfred Ernest), 1861-1914. Geological Survey of Canada. English. cartographic image. Public. Ontario, Sudbury Region, and Sudbury Region.