I recall a couple decades back a crystal lapping machine was being offered for sale here in the Portland OR area. It was something i felt should be saved, but not by me. I don't know where it was from or where it went. Maybe, i'm thinking, it could have been from 'Radio Specialty Company' of Portland, but that's only a guess.

I also recall about a decade ago, maybe a little more, there were more than one Radio Shack DX-150 receivers being offered somewhere east of the Mississippi, that came out of some unnamed crystal grinding shop. The receivers were described as being in somewhat "beat" condition, which did surprise me. Also that such a pedestrian radio was used, altho that does make sense. I suppose this was just for first "roughing in" the crystal frequency.