My wife and I wrote a book on McDonnell's XP-67, popularly if erroneously called "Moonbat," and as far as we know it's the first book on that fascinating airplane. Osprey is publishing it in November as part of their X-Planes series and it's available for pre-order now on Amazon. Very exciting for us, and hopefully the book will be useful for readers. We had to retain the "Moonbat" moniker in the title, the publisher insisted, since they wanted to maximize the number of search terms that might turn it up...