This is an Earth Day poster I made in my High School art class, in 1970, for the first Earth Day.
What is interesting about this painting was that I used some kind of correction white on it, thinking I would fix it later (completely white out the background or something). Yeah right. Later. I didn't realize it would be almost 40 years later using some then undreamed-of technology. In 1970 an average computer took up half a small building.
On Earth Day 2009, I scanned the thing, and used a "clone brush" tool in a paint program to eliminate the white-out. It's done now.