Xenophon Press released a biography of Brig. Gen. Harry D. Chamberlin. It title: General Chamberlin: America's Equestrian Genius. A companion book titled The Chamberlin Reader will follow shortly. At present, you will find the book here:
https://xenophon-press.myshopify.com/co ... rren-matha
Soon it will appear on Amazon and other book sales site.