The shot of the cabinet interior shows green paint on the curved part of the ceiling/roof and what looks like stencil work done in gold. Is this perhaps the original ceiling finish? Stencil work was quite common and I was surprised/pleased to see this little swatch not covered in bland white paint.
The glass in the celestory windows show alternating colored glass with an etched or cut pattern. This appears to be what is called flashed glass where a thin layer of blue or red glass is "flashed" onto the surface of the clear glass, then the pattern is either etched with acid or cut with a grinding wheel through to the underlaying clear glass. Is there by chance a close up photo of this glass work?
It also appears the desk, as well as the corner cabinet, are after the fact additions. It looks like there is a hinge insert in the woodwork under the window next to the desk that would indicate that a removable table was originally intended for that location.
These are great photos of a really nice car. Can't wait to see the balance of the Edna.
Fritz