In the case of these 48 page pamphlets - found languishing and long forgotten in a bookcase - the publisher was Ed Ruscha who put out these books in limited runs of under 3000.
These pamphlets, and similar self-published books by other psychedelic era artists may at first glance appear to be throw-away items, or at the very least candidates for Goodwill donation. Never judge a book by its cover.... Originally selling for under $4 each in their day, these self-published books now command between $500 and $2000 each. Not a bad return.