41. The Anatomy of Pilates by Paul Massey
I checked it out of the library and ran the limits of my checking out. I wish I had bought it from Amazon back then because it has doubled in price since I first started considering buying it! RATS! I am checking it out again from my library now because I refer to it all the time. It is much superior to Pilates Anatomy by Rael Isacowitz and Karen Clippinger (review coming soon).