Greetings caitlyn567!
Welcome to the Forums and the world of Vintage Airstreams!
While I can't be absolutely certain since your range/oven is newer than mine, but it wasn't uncommon during that time period for a gas control valve for the oven/pilot to be located under the cover for the range top. You may need to remove the burner grates, then lift the hinged top -- there you may find as many as two valves -- one may be for the stove-top pilot light while the other may be for the oven pilot light. Hopefully this may help, but they may have changed this feature by
1966.
Good luck with your Overlander!
Kevin