Light Rail Transit does not mean LIGHT RAIL

The pictures on the front of these two post cards show a couple of

Edmonton's Light Rail Transit (LRT) trains. Today, the LRT system consists of two completed lines (the Capital Line and the Metro Line), one under construction, one in the planning stage and two in the concept stage of development. This link will provide information about the intended future of the Edmonton LRT system: https://www.edmonton.ca/projects_plans/transit/future-lrt-projects.aspx

Between the two active lines there are 19 stations on 24.5 kilometers (15 miles) of track. The Capital Line has 15 stations and the Metro Line has four. The system opened in 1978 with only 7 kilometers of track and 14 articulated vehicles connecting northeast Edmonton to downtown. The two trains shown on these two post cards are both built by the German company, Duewag. This company was founded in 1898 to manufacture railway vehicles.

Both post cards were published by JBC Visuals from Toronto, Ontario.

They are definitely from the 1970s. First, because of the time reference in the top post card "Route extensions are planned during the 1980s." and second, because the Postal Code was not included in the company's address. The Postal Code did not come into full use until the late 1970s.