Here's one:
http://www.kim-1.com/usrman.htm#E
From: tlindner(a)ix.netcom.com (tim lindner)
Reply-To: cctalk(a)classiccmp.org
To: classiccmp(a)classiccmp.org (Classic Computers)
Subject: Computer Audio Tape Formats
Date: Tue, 17 Dec 2002 13:50:31 -0800
I am looking for information regarding how various computers wrote
information to audio tapes.
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