IIRC, Mike Biel knows the answer.

Date:    Fri, 5 Apr 2019 13:56:10 -0400
From:    Dennis Rooney <[log in to unmask]>
Subject: Re: Decca and World--RE: [ARSCLIST] Can't find a stylus that doesn't distort

Dear Martin,

Steve Lasker would probably be helpful as to when Decca began mastering at
33,3rpm vertical. I do know that some pop material was recorded both 78 and
33.3, in which case the latter was the backup. Mike Grey has researched
some of the major transcription studios and he may know about World and


 Doug Pomeroy • [log in to unmask]
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