Uniforms must have been his favorites. The wagon's full of them.
3 seconds sound clip from Scooby-Doo, Where Are You! - A Night of Fright Is No Delight (S1E16).
You can hear this line at 00:10:04.565 in the Blu-ray version of the episode.
Quote context
[...]
- Oh, no, you don't. You're going to be brave, no matter how chicken you are.
- Like, wow. What's all that crazy stuff?
- Relics from the Civil War. The Colonel used to collect them.
- Uniforms must have been his favorites. The wagon's full of them.
- Zoinks! Haunted uniforms. Aah!
- Zoinks! Cornered in an elevator.
- Wow. You did it, Scooby! Ha ha!
- I wonder where this eerie old elevator goes to.
- Well, what do you know? It goes to Cousin Slicker's room. Come on.
[...]