At 06:46 AM 2009-12-18, Tom Fine wrote:

>Somewhere online used to be an annotated history of 3M formulations.
http://www.aes.org/aeshc/

Scroll about half way down to "Analog Magnetic Tape:" where it says:


><http://www.aes.org/aeshc/3mtapedoc.html>3M Tape types, Index to and 
>scans of all 46 issues of 3M "Sound Talk," etc.
>
><http://www.aes.org/aeshc/basftapedoc.html>Agfa, BASF, and IG Farben 
>Tape Types
>
><http://www.aes.org/aeshc/books+vids/pre-1943.mag.hist.html>Before 
>1943, History of Audio Engineering and Magnetic Recording
>
><http://www.aes.org/aeshc/docs/bibliographies/histmagrecbib.html>Bibliography 
>of Histories of Magnetic Tape Sound Recording, Selected
>
><http://www.richardhess.com/tape/history/HESS_Tape_Degradation_ARSC_Journal_39-2.pdf>"Tape 
>Degredation Factors and Challenges in Predcting Tape Life", a link 
>to Richard Hess' ARSC Journal paper. Squealing tape, and what can 
>and can't be done about it to play those tapes, including a new method.

Cheers,

Richard


Richard L. Hess                   email: [log in to unmask]
Aurora, Ontario, Canada       (905) 713 6733     1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.