Poster shows an illustration of a valley with a rainbow in the sky. The rainbow has the words "Control Technology / Alternate Production Processes / Legislation/International Agreement / Conservation / Recycling / Public Opinion" in each color in white. Beneath the rainbow is a large raindrop. At the bottom of the illustration is the word "Rain" with water droplets on it. Below the image is "Can Be Clean Again" in red, "Emissions Of Sulphur Dioxide And Nitrogen / Oxides Cause Acid Precipitation. These / Emissions Can Be Reduced At Their Source." in purple and "You Can Help" in red. At the bottom left and right corners are Canadian logos.