What else is in here?

In order to raise some cash to buy some more Three Investigators books, I sold some stuff on eBay. While I was in the garage getting my packing materials to mail some DVDs, I had another quick look in one of the boxes that live in there. I found this beauty:
A nice little Diamond omnibus. It got me wondering just what else is lurking in that garage. I seem to vaguely remember having at least one large hardback left over from my previous collection, possibly Crooked Cat or Shrinking House. I think I may have a really good root through the boxes next weekend, which is of course a bank holiday and what better a way to spend it than adding a large hardback to the collection.