[78-L] OT? question about RCA Program Transcription audio books

[Michael Biel]

On 2/20/2011 4:04 PM, David Lennick wrote:
> There are many others, produced by the American Federation of the Blind. Victor
> and Columbia manufactured them beginning around 1933. If you look here you may
> find some more, as well as virtually every 33RPM 10-inch and 12-inch master
> recorded by Victor..Program Transcriptions, radio commercials, demo discs. 14
> and 16 inch discs aren't listed.
At least those using the L grooving.  Those using the standard width and 
the universal M and N grooving aren't listed either.

  Mike Biel   Mbiel at mbiel.com