On the Atlas of Canada website, find the earliest map showing telephone infrastructure in Western Canada. Identify its publication year and the provinces/territories it covers. Then, locate the most recent 'Marine Transportation Infrastructure – Ports' map to determine its publication year and the approximate number of major ports displayed.
Navigate to the English version of the Atlas of Canada website. Click on the 'Communications and transportation' theme. Go to the 'Communication' subsection. Identify the earliest map related to telephones in Western Canada, which is 'Telephones Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia and Yukon, 1906'. Extract its publication date and the specific provinces/territories it covers. Go to the 'Marine transportation' subsection (by scrolling up and clicking the link or directly navigating if possible). Identify the latest edition of the 'Marine Transportation Infrastructure – Ports' map. Extract its publication date and the approximate number of major ports shown. Synthesize the collected information for both maps.
State that the earliest Western Canada telephone map is 'Telephones Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia and Yukon, 1906'. State that its publication date is 1906. State that it covers Ontario, Quebec, Manitoba, Saskatchewan, Alberta, British Columbia, and Yukon. State that the latest ports map is 'Marine Transportation Infrastructure – Ports (2006)'. State that its publication date is 2010. State that it shows approximately 590 major ports.