The lower window next to the door has been collecting water on the inside sill.  That explains some of the water damage I found on the floorboard near the door.  It appears that the topmost window in that section may be contributing to the damage as well.

The stovetop vent also has a small leak towards the rear of the mounting which has probably caused the rotted plywood behind the kitchen countertop.

At one point the street-side bedroom window was retro-fitted with a window air conditioning unit.  The remaining window opening was covered in plexiglass.  The air conditioner sits on metal brackets on the window sill and around this lower edge there is a small gap.  It doesn’t appear to be leaking, however there is water pooled in the metal channel below it.

All of the rooftop vents and AC unit look to be leak-free.  I was worried about one of the vents as the aft handle is disconnected from the vent top.

Priority number one over the next few weeks will be to find replacement gaskets for the windows and door.