Where may I find a book titled "the Testament of the Truth?"

I've never heard of it. Is it new or out of print? If you can't find a book listed at Amazon (or whatever your favorite online store is), you can go to your local Barnes & Noble and ask someone to look it up in their computer. They have a computerized list of almost every book ever written. Even if it's out of print, sometimes they can order it from used book stores, etc that have it.