Sub-sub-series contains files related to the organization and planning of the fourth annual Canadian Energy Exposition held at Ryerson Polytechnical Institute May 7 - 9, 1981. The professional conference was held May 7 and 8th, with a 2 day family oriented "Festival of Energy" held May 8 and 9th.

Sub-sub-series contains files related to the organization and planning of the third annual Canadian Energy Exposition held at the Ontario Science Centre March 15 - 20, 1980.

Sub-sub-series contains files related to the organization and planning of the second annual Canadian Energy Exposition held at the Harbourfront Centre May 3 - 6, 1979.

Sub-sub-series contains files related to the organization and planning of the 1978 Canadian Energy Exposition held at the Harbourfront Centre April 26 to May 3, 1978.