Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the pattern of the Canadian railway network. Lines of the principal railway companies are shown in colour, while those for smaller companies have the name of the operator written beside their lines. The map gives substantial US coverage as well: it shows links to US rail companies, and also the location of American lines owned by Canadian railway companies. The map also has a table listing railway distances between 14 major centres.