1. Toronto-Hamilton, Ontario [cartographic material] Yale Public content 1961. 2012-06-07T18:01:16Z. 2012-06-13T15:05:18Z. Caley, J. F. Dept. of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography. English. Public. Ontario, Toronto Region, and Hamilton Region. Paleozoic.