I came across an interesting swedish site called The Sweedeedee Archives a few days ago. I haven’t really figured out if the guy is documenting his own personal collection or if it’s just basically a list of albums and covers that he likes.
However, a quick search for “warhol” gives some interesting results. Many of the gems are there, Ratfab, Trombone by Three, The Congregation, Monk and Moondog. I’ve tried to get in contact with him to get his asking price for the Ratfab and Trombone by Three records but so far no reply. He seems to have been active on ebay also so i doubt that i would get a bargain on these anyway. But it would be interesing to hear where he found them.