Jungle Jim?
Maybe “Jungle Jim”—maybe on YouTube? (Done a few searches before giving up).
I’d recognize the specific “lingo” as described previously—impressed into my young memory. (I was about the same age).
The main character was an “Anglo” boy. (A “WASP”, if you will).
His sidekick was a knowledgeable Indian boy about the same age: Transport was mostly by elephant.
Maybe that show was followed by “Space Cadet”. All in black and white, of course.
About 1953...