I just wanted to say that I was thrilled to find this item. I have almost all of Mr Kelly's Castle Oldskull books and truly treasure them. I was considering creating an XLS just like this to save time. I think being able to generate a few ideas on the fly and then be able to decide which go together best would be a great way to find solid material quickly. So I am very glad that Mr Kelly has taken the time to do this himself. Thank you, Mr Kelly for the Oldskull books. I really do enjoy them and look forward to each one as they are released. You've saved me much time and many headaches!