If you do add a duplicate book in error please let us know and we will delete it. You can just email us any issues about books you add, since it's not really relevant to any other member. I have now transferred over your details and cover image to the book already in the Library so you should add that to your Bookshelf.
I have corrected any listings of Pennsylvania Dutch as Dutch to German.
We only link books if they are being indexed - since the two Pennsylvania Dutch books you mention are only owned by you, they will only get indexed if you volunteer to index them yourself. Make sure you let Sydney know if you request to index them that the books should be linked.