Well, no hoofprints in the road, but here's something I found. It's an authentic Indian relic, at least a thousand years old.
9 seconds sound clip from Scooby-Doo, Where Are You! - Decoy for a Dognapper (S1E5).
You can hear this line at 00:09:14.650 in the Blu-ray version of the episode.
Quote context
[...]
- Get this phony decoy out of here!
- But what will I do with him?
- Give him a ride down the mountain on the old handcar. By the time it stops, he'll be 20 miles away.
- And when this weirdo Indian attacked, I felt like a late-show rerun of Custer's Last Stand.
- Are you sure it was a real Indian?
- Real? Why, when he waved that tomahawk, even my hair was scared.
- I told you I thought he looked kind of ghostly.
- Let's plot an intercept course.
[...]