Leo Lessard -
On Pg 65 in The Mountain Valley war, there is a citation which states that Andrew Jackson killed a man in a duel. It continues by stating that it was only a few years back. This cannot be. Andrew Jackson killed Charles Dickinson and he was the only one who ever was killed by Jackson. Unfortunately, the problem is - this happened in 1806 so this could not match the timeline given in the book.

On pg. 17, Virgil Earp killing Billy Brooks is cited but according to my research at this link,(https://en.wikipedia.org/wiki/William_L._Brooks), Brooks was lynched while awaiting trial on July 29, 1874. Also, a gun battle did take place but it was Morgan who shot Billy Brooks in the stomach, and as some stories cite - fatally. Virgil had nothing to do with Billy Brooks from what I can find.