Bill Berkson kindly forwarded me a pdf file of an interview with Anselm Hollo in VORT magazine back in 1972. Barry Alpert, whose magazine it was, was early in on that area. I remember going to meet him across snowy fields outside Bloomington where he lived in a trailer surrounded by what he said was every rock album up to then: I had no reason to doubt. Barry is still extant. I saw him in Washington DC a little over a year ago. He had had a bookshop that was firebombed, the story went.