OK, just a bit ago I got my daily ''Follow Your Favorites'' newsletter from DTRPG, and it included blurbs (and links) for B1 In Search of the Unknown and B4 The Lost City. I was kind of excited to see this, since WotC had removed all of their pdfs quite a while ago, and I was hoping that it was some sort of special thing for the holidays... No such luck, unfortunately, as trying to purchase them just got me error text. So, I'm posting this so that no-one else gets suckered / out of a dim hope that they will become available or something...