But he let her slide, and first he knew old King had come in and staked a claim and built him a shack right in our end of the pass, and camped down to stay.

Your dad wasn't joyful.
The Bay State had used that pass to trail herds through and as the easiest and shortest trail to the railroad; and then old King takes it up, strings a five-wired fence across at both ends of his place, and warns us off.
I've heard Potter tell what warm times there were.

Your father stayed right here and had it out with him.

The Bay State was all he had, then, and he ran it himself.

Perry Potter worked for him, and knows all about it.