You know why, I guess," said Dewing.

"If you'll ask that little Bobby kid of Jackson Carr's, he'll tell you that Stan lost his spur beyond Hospital Springs about sunset on the night of the robbery, and didn't find it again.

The three of us rode in together, and the boy can swear that Stan had only one spur.
"I saw the spur when we were hunting for it; I saw how it would help me get Stan out of the way; so I said nothing, and I went back that night and got it.

I dropped it near where I held Wiley up, and found it again, very opportunely, when I came back to Cobre with the posse.

Every one knew that spur; that was how the posse came to search Stan's place.
The rest is easy: I hid the money where it was sure to be found.