It’s not mysterious or anything why there is no decent source of legit digital editions for high-counterculture era underground comix. The licensing issues must be quite sufficient to drive any random number of publishing enthusiasts and idealists to suicide every year.
Clearly, what is called for is a complete fraudster, a rip-off artist of epic proportions. One would think that a bankster or Wall Street reaver would have had the gallows humor to at least attempt bringing these crucial documents to the era of pixels and LED induced sleep disruption.
I mean, I do find it ironically amusing that my best bet for reading the Shelton/Mavrides masterworks is to download PDFs from Russia, but having actually consumed beers with one of them, I would honestly prefer to give them money for the privilege.