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On 21/09/2012 14:20, Tom Fine wrote:
> If I were to compile a group of examples of early stereophony 
> experiments, let's limit this to record-company recordings and 
> 2-channel, what's missing from this list:
>
> -- Blumlein EMI
> -- Bell Labs/Stokowski
> -- German 2-channel magnetic tape experiments on the AES CD
> -- Bert Whyte Magnecorder experiments 1952-53
> -- RCA Reiner/CSO 1954
> -- Mercury late 1955
> -- Decca Ansermet
> -- other mid-50's American and European stereo commercial firsts
>
> The main thing I want to know is, am I missing any other pre-tape 
> 2-channel experiments? I think only EMI and Bell Labs experimented 
> with 2-channel disk recording in the 30's, to the point of actually 
> making recordings.
>
> Thanks in advance for any corrections/additions.
>
> -- Tom Fine
>
There was a guy named Francis who was working on stereo just pre-war and 
again post-war. His system was bought by Decca, who employed one of his 
assistants, Roy Wallace, who engineered some of the early Decca stereos. 
Arthur Haddy writes about this in Audio Biographies, if I rememnber 
right. I've never come across any surviving material, though.