Contained within the Atlas of Canada's Reference Map Series, 1961 to 2010, is a map of Ontario. The map shows federal and provincial boundaries, and also boundaries of counties and of places of more than 50 000 inhabitants. There is also extensive coverage of the boundaries of geographical townships. The county-level units are named. The transportation content consists of roads (shown in four classes), ferries, and railways. Populated places are shown in one of five size classes. The map shows national parks and the larger provincial parks. Data is as of about 1990.