50. Jubal Sackett Louis L'Amour 1985
Jubal Sackett is the middle child of Abigail and Barnabas, and therefore a part of the first Sackett generation born on American soil. The book is set around 1650, and is longer than the other Sackett books I read. It involves the requisite Indians, one of whom Jubal marries. And a mastodon which Jubal kills with his gun and his pet buffalo, Paisano.
Guys- you can't make this stuff up. Unless you're Louis L'Amour.