He was even a NAMBLA member - but I'm pretty sure he didn't have any pedophilic tendencies himself. I think he was something of an ephebophile (though less so than Burroughs) - he had a 17-year-old lover when he was in his 60s (who also had sex with the then septuagenarian Burroughs). The thing one has to remember is that many, if not most founding members of NAMBLA were ephebophiles, who out of misguided hippy ideas about liberated sexuality (which weren't that uncommon at the time) advocated for pedophilia as well. Here's a good article about its history: http://www.bostonmagazine.com/articles/2006/05/boy-crazy/