http://history.sandiego.edu/gen/recording/images/PDRM1554a.jpg
 
They label this as a lateral disc recording, but to me it looks vertical, just 
that the sound waves are near the top so they look lateral.  The date 1881, 
many years before the Berliner disc, has anyone played this disc?  Was this 
disc known about previous to the Berliner patent on disc records?  You would 
think that the patent office would have not accepted the Berliner patents if 
this was known about??
;
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