Go, Read: Fantagraphics Selling Gary Arlington’s Warrens Here. I think I knew this already, but it's worth mentioning again. I'm all for the idea of comics having pedigrees according to who had them previously, and I would love for this to become a thing on a more regular basis. I don't have a compelling argument for this, it would just amuse me. Also, there are some really great comics in the described stash and you should get on that.