Started the process of exposing the interior wall - this would have been the original exterior wall of the house, before the patio was closed in.

Back of wainscoting panel

Exposed sheathing

Blurry picture of back of carpet and underlayment

This all looks relatively healthy to me so far, though this is only one four foot section. I’ll proceed towards the corner, once I find a home for the stuff I have stored back there.