If you’re into collecting cartoon memorabilia, you might be interested in this complete collection of buttons. “All of the participating cartoonists were alive and created self-portraits specifically for this button set.”
It’s definitely worth a peak. Why don’t cartoonists do something like that today? It’s like having something akin to baseball cards for the cartooning industry. Fifty years from now, who wouldn’t want to have a mint condition Bill Watterson, or Gary Larson card/button/something/something?