This map shows locations of ports in Eastern Canada handling more than 5000 tons. Pie charts are superimposed on the map and show whether the tonnage was loaded, unloaded, from foreign ports or from other Canadian ports. Two smaller maps show Newfoundland (1:5 000 000 scale) and Northern Canada (1:20 000 000 scale). The map is accompanied by a graph showing tonnage by territorial division for 1964.