I was able to track down Spain's work thanks to Fantagraphics' reprint volumes (part of their quixotic attempt to reprint the work of several underground comix artists during a period in which there wasn't a bookstore market for comics like these): 1989's Trashman Lives! and 1994's My True Story, a book that collected his autobiographical and non-fiction stories, a body of work that probably showed Spain at his best.
The following is just a minor footnote in his career, but it is a somewhat unexpected example of Spain's influence and may be of interest for those who (like me) enjoy comics trivia.
A few months ago comics writer Pat Mills started posting on his blog a series of articles about the creation of Judge Dredd. Back in September he wrote the following:
With the prospect of a better and fairer future ahead of us, John [Wagner] and I enthusiastically talked about his idea for a cop of the future. We were both impressed by a one page American underground strip called Mannix that was reprinted in Comix: A History of Comic Books in America, by Les Daniels. It featured a ruthless cop who shoots a fleeing criminal in the back and was obviously satirising dirty cops some years before the Clint Eastwood films appeared. We were also impressed by a story in American magazine Weird and Eerie where a science fiction cop pursues a criminal through a futuristic city and executes him. We then discover the perp’s crime – he was carrying a copy of a sick and seditious magazine, Weird and Eerie!
We also rated science fiction movies like Fahrenheit 451 where cops burn books, Logan’s Run where cops shoot old people, Death Race 2000 where crazy drivers run over pedestrians in legalised death races, and Rollerball where death is turned into a sport. Against this background, John suggested to me, “What about a future New York cop who executes people for the smallest infraction of the law, such as dropping litter?”
Thanks to Tom Spurgeon, we already knew that before "Before Watchmen" there was Spain Rodriguez. It turns out that before 2000 AD and Judge Dredd there also was Spain Rodriguez.