Drop the "ums" (a stupid dialect convention of the time) and this is a perfectly good little back-up story. A young Navajo boy discovers a hidden tribe and resolves their keeping him prisoner by showing them new techniques. The artwork is much better on closer look.. layouts and body languages are fine. I like the details like the dog scratching behind its ear.
RED RYDER was made into a serial with more action than the norm, and there Little Beaver was played by Robert Blake (who later starred in TELL THEM WILLIE BOY IS HERE and the TV series BARETTA.)