In article ,
UnsteadyKen wrote:
The quality of the stereo recordings heard on the program were
excellent for that date, does anyone know on what medium they would
have been recorded? Wax cylinders or optical film is my guess.

Wax cylinders stopped being used in the very early part of the last
century - it would have been acetate discs. Optical film was pretty poor
until Dolby digital arrived.

--
*Yes, I am an agent of Satan, but my duties are largely ceremonial

Dave Plowman London SW
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