I will echo what John said, and thank you for your GREAT work on this! Even if we continue hit dead ends, just knowing that such recordings were made at all is of great interest! Who knows, at the end of one "dead end" their could be a glimmer of hope to one day finding one or more of these elusive discs!
Thank you, again, and, it should go without saying, please keep us informed on anything that turns up...even if it's yet another wall!
