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These look like Audograph records. Play from the inside out and the speed
is constant linear meaning the record will spin slower at the out rim, like
the cd.
Cheers
Shai Drori

On Tue, Jan 5, 2016 at 10:33 PM, Karl E. Fitzke <[log in to unmask]> wrote:

> Happy New Year, everyone.
>
> A fellow Cornell Library employee just asked me what I might know the type
> of disks they just found a stack of in a box of archival submissions
> (french lessons?).  Short of my experience with cereal box records as a kid
> and magazine inserts later in life, not much.  Here are some photos.
>
> https://cornell.box.com/s/6yclc1zn7padx02o4ejll083etem0ohg
>
> Without looking closely, I'm guessing that they play inside to out, based
> on the blank material on the outside of some of them.  And that the
> technology enabled multiple but independent tracks, i.e. that don't
> necessarily play one after the other.  The keyed spindle must prevent these
> lightweight discs from slipping.  The few disks I looked at are only
> one-sided, but there are designations of "1" and "2" cut into them.
>
> Anyone have a machine made to play these?  Would it be foolish to try with
> a standard turntable (after some closer inspection of the groove to make
> sure it doesn't require the turntable to revolve in the other direction)?
>
> As always, I'm grateful for the community to consult here!
>
> -Karl
>