If you're in London between now and the end of September, you should take the time to stop by the British Museum and see this special exhibit. I was there last week, and it's absolutely worth the trip! Some of the highlights for me were the ancient bits and other pieces of tack, the full suit of Turkish armor (horse and human), the Arabic art and horsemanship books, and the section on the Blunts. There is a gift shop at the end with some really nice stuff, including the official book of the exhibit that shows photographs and descriptions of every single object.
Oh, and if anyone does go, can you do me a favor, please? In the gift shop at the end, there was a fascinating book on the history of the Arabian horse. I really wanted to buy it, but it was huge, and I had a lot of walking to do that day. I figured I could just get it from the British Museum website, but it's not there, and I stupidly didn't write down any information to find it on Amazon. I would love to find out the title/author/publisher so I can buy it... It was a large (square) and thick paperback book, called something like The Arabian Horse in History and Art. The cover was sand/tan colored, with old drawings of horses on it, and it cost 45 pounds. Thanks!
If you go to Paris...do not miss Musee Vivant du Cheval at Chantilly Palace outside Paris. I can't find their website. The fabulous stables once housed 240 horses and 500 dogs...now set up as a museum with 31 exhibit rooms and they have a small 'living horse' sector. Fabulous.