Muscatine

00-RUK

Indeed, I have been tracking your secret decoder ring with my decoder ring homing device. All evidence does indeen point to it's locatin being somewhere in the area of the Mighty Mississippi Mist. No exact 20, tho- just soewhere within a quarter mile radius of the Mist. Be advised, amd take action.
Over and out.

Aaaah, memories.

Good job, kiddo.  She was funny, but her fingers and her spelling didn't always work well together.