Thank you wish they were in better shape though
They were considered disposable, to the radio stations, so they rarely went to the expense to make higher quality vinyl transcriptions. As you may know acetate, which was much cheaper, does not last very long unless it is carefully stored in very specific archival conditions.
Many of the early historical photographs, which used acetate as a film backing, have been lost to mishandling and decay of the acetate. Very sad, really.
If you got through that article, yet, it mentions that many of the early "radio programs" are only available to us today, because someone at the station took very good care of their transcriptions, despite the fact that the radio station companies thought of them as disposable.
Recording was also done in those days on "wire" recorders, instead of tape, but the quality was not good for a variety of reasons and they were not permanent either. You could also save money by re-recording a wire, but the transcription discs were not re-recordable.