@roadhog2001-0 I am not aware of any underage people in porn of the 60's and 70's from studio porn. I have never sought out underage porn mainly because I don't find them attractive. The only underage stuff I have seen is from Brent Corrigan of Cobra, Oliver Krist of Bel Ami and a webcam performer named Dillon. They lied and said they were 18 when they were actually 16 and 17. They got away with it because they looked 18+
I was never a fan of Colt movies, but as I recall, their performers are in their 30s.
There were some b/w movies made by some famous guy who I can't recall his name. There is a documentary about him. His movies were not explicit and pretty much r-rated.
Due to the expense of filming and other factors I don't think there is any explicit gay porn before about 1984. Even the first gay porn I saw - Cousins - is not that explicit. I don't think there is any video of an asshole in that movie.
i think the reason the old stuff has been purged from libraries is because it is so low quality and degraded. 8mm looks like crap, and anything recorded on VHS fades / degrades after a few years. Even CDs and DVDs degrade after a couple of years. The only way to store data without loss of quality is digitally. Any physical media is going to degrade.
If you are talking about the legality.. technically, porn of any kind is illegal in most places in the USA, but rarely enforced.
There was a famous case in the past couple of years in which a male and female actor were filmed in the nude in a movie they made several decades ago, and now those 2 actors are trying and failing to sue the director for filming them nude when they were underage. it was not a porn movie, but they were nude.