Here's a clip from the 1970s showing three commercials:

1. American Cancer Society, "Sun": Kids in swim suits play on the beach under blazing sun.

2. Department of Agricultural Soil Conservation Service, "Danger":  A couple considers the soil beneath their home.

3. Better Hearing Institute, "Bicentennial Sounds":  Provides a montage of American revolutionary war images and sketches, the Liberty Bell, a liberty parade, stills of Americans who are potentially affected by hearing issues, school children, and the elderly.