Here is a book review I found on the New York Times of a book that I thought might interest history buffs. Its fairly easy to read but kinda lengthy (not gonna lie, I didn't read the whole thing) so I would recommend skimming and looking for what you find interesting.
THE LAST STAND: Custer, Sitting Bull, and the Battle of the Little Bighorn
By Nathaniel Philbrick
Illustrated. 466 pages. Viking. $30