La armada invencible by Cesáreo Fernández Duro

I suddenly thought of looking to see if La armada invencible By Cesáreo Fernández Duro might be available through Google Books, and it was. I just downloaded the PDF file. I had despaired of ever finding the book and now I (sort of) have it. This is an important source book, from the Spanish perspective, about the Spanish Armada. The book is reportedly based on a cache of documents discovered in an old Spanish castle, back in the latter 19th Century.