Harry Castlemon 
Frank in the Mountains 

After acquitting himself on the battlefield in multiple volumes of Castlemon’s beloved juvenile fiction collection The Gunboat Series, protagonist Frank Nelson sets off for another adventure — this time in the heart of the majestic Rocky Mountains. Through brutal storms, run-ins with friendly and not-so-friendly inhabitants of the region, and several other setbacks and challenges, Frank and his loyal sidekick Archie strive bravely to make it back home.