Very brief, indeed. It left me wanting more.

In particular, I would have mentioned the explosion of independent printing shops in the 60's. There’s a great list of counter-culture and political print shops here: http://www.docspopuli.org/articles/BayAreaRadicalShops.html

I would also love to see more on the role of experimental, underground comics in the psychedelic movement. But then comics are not quite as beloved by design historians and critics the way posters are.