You're in my wheelhouse now....
For a factually accurate and riveting account of life "back in the day" read --
The Big Sky and The Way West by A.B. Guthrie
Heyday by Kurt Anderson
Deadwood by Pete Dexter
High Country by Willard Wyman
I'm a huge fan of both MacCarthy and McMurtry and if you are too, you owe it to yourself to read these books. Trust me, you'll thank me later. I read a LOT, many different genres, and these are some of my favorite books ever.