[78-L] Dr. Michael Biel quote

[Ron Fial]

Mike,  the Wikipedia entry for Herbert Morrison (announcer who recorded the Hindenberg Disaster on laquer disks),  has a quote from you that needs a source.  I wonder if there is a published source for this quote?

    Regards,   Ron Fial
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The web page is:  http://en.wikipedia.org/wiki/Herbert_Morrison_%28announcer%29
quote:

One of these people is audio historian Michael Biel of Morehead State University, who studied the original recordings and analyzed Nehlsen's vital contribution as an engineer as well as the playback speed issue:

  I have closely examined the original discs and photographed the grooves at the point of the explosion. You can see several deep digs in the lacquer before the groove disappears. Then almost immediately there is a faint groove for about two revolutions while Charlie Nehlsen gently lowered the cutting head back to the disc. Fortunately the cutting stylus never cut through the lacquer to the aluminum base. If that had happened the most dramatic part of the recording would not have been made because the stylus would have been ruined. The digs and the bouncing off of the cutting head were caused by the shock wave of the explosion which reached the machine just after Morrison said "It burst into flames." I and several others believe that the originals were recorded slightly slow, and that all replays have been at too fast a speed. Comparison with the now two other known contemporary recordings of Morrison demonstrate this conclusion.[citation needed]