I have offered audio restoration services for many years, from any (and
all) types of recorded audio media - cylinders, wire, tape: paper,
plastic, sprocketed, 2MM to 4"...  etc etc. I restore damaged media and do
forensic work.
  That being said, if any list members have a few bits of recorded stuff
lying about that you'd like cleaned up and transfered to a CD, contact me
off-list.  Obviously for big and/or complex jobs we'd need to discuss a
fee structure, but for the occasional disc, old tape, or spool of wire
that can be rolled into ProTools and dumped to a disc... why not?
  I imagine that this would extend to data cassettes with FSK or other
audio-freq modulation schemes, so it's not *that* badly off-topic. :)
  Cheers
John