Re: [ARSCLIST] Red glass disc, was National Recorded Sound Preservation Study

[David Lennick <dlennick@xxxxxxxxxxxx>]

George Brock-Nannestad wrote:
> ----- I have only ever seen red ones, never water clear. The color and 
> transparency was so confusing to a recent graduate from one of our 
> institutions of higher learning (and to the external reviewers!) that it went 
> completely un-noticed when he claimed that heavy, red, transparent records 
> were made of solid shellac (which is always only present as a binder, 
> amounting about 20% of a shellac disc). Some students and purported 
> specialists are without any sense of history.
>
> Kind regards,
>
>
> George
>
>   
Clear-O discs were made by the Dearborn Glass Company, Chicago. I have a 
couple, in their original box, containing recordings by "Martin's Jazz 
Group", 550th US Army Air Force, 1943. No idea who Martin was. Both 
discs are broken but the pieces fit cleanly together and they were 
thicker and heavier than glass-based Prestos and Audiodiscs.

dl