[78-L] RCA Special purpose records

[Steven C. Barr]

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From: "David Lennick" <dlennick at sympatico.ca>
> Virtually all of mine have come out of radio station libraries. Most of 
> them show the timing, which was not printed on commercial pressings till 
> the mid or late 50s..some even show the time to where the vocal starts, 
> and some have a descriptive paragraph for the disc jockey on the cover.
>
Apparently, RCA used the "Special Purpose" designation for any pressings not 
part
of regular issues? I have seen a few of the earlier "DJ promo" discs (they 
often have
the A side on both sides); however, the classical discs described in this 
thread would
seem to be low-noise vinyl versions of existing shellac Red Seal discs of 
note?

Steven C. Barr