Not to mention "Brother Power the Geek" and "Prez", absolutely original.
I was very saddened at first, but we must say Simon lived an admirably long life, and now him and Jack are reunited!
As experienced writers, both Kirby and Simon dealt with the late 1960s and 1970s youth feelings and so-called "counterculture" in an absolutely original way.
Kirby produced his 4th World (where the most interesting allusions to "flower power" are done in Jimmy Olsen and the Forever People) but he would also keep on a very peculiar exploration in Kamandi, and some experimental magazines he did.