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

[David Lennick]

On 2/20/2011 4:22 PM, Michael Biel wrote:
> 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

Do we have any other source for that info? UCSB?

dl