Here's a daughter's account of her realization that her father was an addict. It's gut-wrenching.
Here's a review of a film about Roky Erickson called You're Gonna Miss Me, which will feature some apparently epic heroin binges.
And I found this quote from a review of the life of Alexander Trocchi, author of Young Adam, from one of his university professors. It SO describes my man:
"He was extraordinarily magnetic, some would say manipulative - able to get what he wanted out of people. He was very charming, but with a hint of danger. Sometimes there were these dark looks from under his eyebrows, a sense of something different altogether. There was a depth to him that was impressive, strange and not quite sinister, but there was the sense that something unexpected could happen."