Two Tone Green Square

Two Tone Green Square Art Button Museum
Category
Art
Cause
Additional Images
Two Tone Green Square button back Art Button Museum
Sub Categories
Illustrations
Ecology
Environment
Image Description

Green and blue triangles on a yellow background
Back Style
Unlocking pin
The Shape
Circle
The Size
1 1/2 inch
Year / Decade Made
1970s
Additional Information

The Idaho State University's Eco-Alliance Committee sold these buttons to support the first "Environmental Teach-In" on April 22, 1970, now known as Earth Day. Yellow is for sunshine. Green is for plants, grass and trees. Blue is for clear skies and water. This teach-in was a major moment in changing American's consciousness of ecology and the deterioration of the environment.
Sources

Idaho State Journal Newspaper Archives, Mar 19, 1970, p. 2. (1970, March 19). NewspaperArchive. https://newspaperarchive.com/idaho-state-journal-mar-19-1970-p-2/ 
Catalog ID AR0404