You're most welcome. And, I should add, the best of luck with your book. I understand the joys of finding something new for a book, and research, as I have been on a similar path concerning aviation related photos on Cyprus for many years. If ever I come across any Belvedere related photos I shall let you know. Wonderful place that National Archives isn't it ? I can rarely make straight through the main entrance without stopping and browsing the lovely souvenir/bookshop. Good luck.