In my History of Graphic Design class the last lectured consisted of posters from the 60s. We talked of Wes Wilson and Rick Griffen. They are both creators of what we think of today of very lucid, lava like type. Wes Wilson's work is unlike any other. His work and creation of this very well reconized type is found and replicated on many others posters as well. Rick Griffen is also a illustrator from the 60s who created the famous album covers for the Greatful Dead as well as comics during this time.