https://www.amazon.com/Man-Horse-Long-Across-America-ebook/dp/B075821TZ7
This book is on sale on Amazon for $0.99 (regularly $5.99) 7/1/2018 - 7/31/2018!
In 1974 John Egenes rode his young horse across the United States. The book is a recollection, a memoir, and a look back at an America that no longer exists. It's about a young man coming to terms with himself, and how a little Quarter Horse named Gizmo showed him how to do that. Ride with them on a journey that could only be experienced step by step, mile by mile, with a view from between a horse's ears.
"…a story of hardship, change and growth revisited through the lens of time and maturity. I had a hard time putting it down."