X2 on the Bakelite - I had forgotten about the "linen" part. Everybody thinks of old black telephones when you say "Bakelite". That stuff was just phasing out as I was getting into the Electronics Biz and I totally remember that acrid smell when it burned.
Lots of electrical parts from my '69 Beetle donor had that Phenolic stuff in it, like the substrate inside the headlight switch or emergency flasher switch that held everything together.
The fiberglass printed circuit boards of today can take a LOT of heat w/o igniting or outgassing - (they outgas during the manufacturing process), and are probably much cheaper to produce, too, while being impervious to just about anything, which also makes them almost impossible to recycle. While I've seen them in colors, 99% seem to be that pukey green color.