Finally

I get to take the inside shell off. The last step before the shell gets separated from the trailer. I knew from distinct scents that more rodent traces would be found between inner and outer shell. But what I found was still surprising. In some side panels, the insulation looked like it was put in yesterday. Others were completely eaten up, compacted and turned into rodent housing with lots and lots of rodent poop. Time again to wear the mask. On the upside it is great to see the clean metal behind the insulation.
The outside of the inner shell end cap is quite corroded from rodent pee. I hope a good wash with lots and lots of dish soap will take care of that. A lot of folks powers the inside of the trailer once the inner shell is off but I rather want to wash it with soap water and mineral spirits.  

No damage after 58 years.

Pile of rodent poop on top of end cap, no insulation left.

...the rail is filled with rodent poop, yuck!

Finally, the inside shell is gone!

The Cylon has been peed on - a lot.

All insulation turned into mouse housing