1. Geology, Manitoulin Island, District of Manitoulin, Ontario [cartographic material] Yale Public content 1957. 2014-06-16T18:29:23Z. 2014-06-16T18:29:23Z. Liberty, B. A. Dept. of Mines and Technical Surveys, Geological Survey of Canada. English. Public. Ontario, Manitoulin Island, and Manitoulin Island.