I am only familiar with Pogo from a clayamation feature that went totally over my head.
lets see.. cut and paste from Imdb http://www.imdb.com/title/tt0087925/ Pogo for President: I Go Pogo (1980) and I watched on HBO so I was....7-8 no wonder it went over my head. But I know I watched at least 3 times.
There were some original strips, and the creator's daughter (who still does the comic) at Anthrocon last year. It was some seriously hardcore shit for such a cute, kiddie comic. This thing doesn't get the praise and recognition it deserves.