Being a collector of piano rolls I know about these two organizations.
There's the Mechanical Music Digest http://www.mmdigest.com/
There's also the American Mechanical Instrument Collectors Association (AMICA) http://www.amica.org/Live/index.htm
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Darren Ingram
Sent: Wednesday, May 07, 2014 8:42 AM
To: [log in to unmask]
Subject: [ARSCLIST] Recommendations concerning "Music Rolls" / "Pianola Rolls"
Should anyone have any recommendations for mailing lists, etc concerning the above type of music, I'd love to hear of it. We've got quite a lot of surplus items/duplicates in this area and I'm slowly putting a list together and it would be good to direct that to a few relevant places.
Darren Ingram / Music Library Finland
¦ D P Ingram