Richard Parker wrote, "Could you please help point me to an FAQ
on Edison cylinders...?"

There are many places to locate this information.  I urge you to try
"CAPS" = Canadian Antique Phonograph Society.  I was a founding member
of this organization thirty-five years ago and it is still going
strong.  There is a web site with loads of information and lots of
links at

  http://www.rose.com/~caps

Have fun!  The phonograph is a great "go with" hobby to join up with
your player piano.

Regards - Ken Vinen, Stratford, Ontario, Canada.