Hello Angela. Interesting Airstream! Welcome to the forums.
It will be necessary to remove the inside skin to get access to do a shell off. Save the skin pieces. They are necessary for shell rigidity once you put it back together. Most people use those again and only a few use them to make a template for new ones. Dealing with interior skin - read from post 268 onward at It's a Girl!!!
- a wonderful
Bring all your questions here please.
Because for every ten questions we get to request one more picture of your vintage jewel!