I think I know where 'll be.
3 seconds sound clip from the The Oklahoma Kid (1939) movie soundboard.
You can hear this line at 00:37:53 in the DVD version of the movie.
Quote context
[...]
- With judge Hardwick on the bench, there's nothing to alarm us.
- Dad, you're covering up. It was him, wasn't it?
- Sheriff, the Oklahoma kid's in town!
- I think I know where 'll be.
- Wait son. Don't do anything you'll regret.
- Hello, ma'am. Came here to see you and talk to you.
- The whole town is plastered with posters offering a reward for you.
- I saw them... every one an insult. A measly 500 dollars.
[...]