It is high quality, great care was put into its creation, and since this is a free and open source item I would encourage all to give this to as many people as you can think of. If you have X/Twitter, Facebook, email, snail mail, whatever you have. Make sure you give it to others. What astounds me is how quickly this was strong-armed to completion. Very impressive!
America's Retreat from Victory; The Story of George Catlett Marshall
There is a free lunch after all!