He did nothing in public. From what I've heard he spent a lot of time puttering around the town he grew up in and painting. Maybe there'll be a show/book/whatev

He did nothing in public. From what I've heard he spent a lot of time puttering around the town he grew up in and painting. Maybe there'll be a show/book/whatever of them someday. Maybe not. When he retired, he'd also shaped a generation's ideas of what a comic strip about a kid should be. Hell, of what comics should be, period - wander around a comic book convention asking people what their big influences are, and a lot of people will mention his name. He'll probably be remembered for another hundred years by anyone who cares to skim the history of the Great Comic Strips of the Twentieth Century. You do something like that, I think you're allowed to retire and do work solely for yourself.