What was the context of quote from Walt Pogo cartoon have found and where can you see a copy cartoon?

Context: The quote "We have met the enemy, and he is us" is from a 1970 Walt Pogo cartoon strip which was commenting on environmental destruction and the human role in it.

Where to See the Cartoon:

The Pogo cartoon can be seen in the Walt Kelly book "Pogo Then and Now." The quote can also be seen on the website "Pogo Possum: Walt Kelly on Nature and Politics."