The American Adventure Series was originally published by Harper & Row between 1941 and 1967. The books are highly engaging, quick paced, and exciting. The reading level increases in difficulty; here are the books listed by readability levels. These are general guidelines and of course you know your children best 🥰

Pilot Jack Knight  - 8 and up
Dan Morgan Rifleman - 9 and up
Alaska Bush Pilot - 9 and up
Sabre Jet Ace - 10 and up