> Jerry and Ron, is there any paperwork about this at the site? Mike- Ron Dethlefson has a chapter on those Ediphone training cylinders made using the Blue Amberol materials in his book "Edison Blue Amberol Recordings", 1912-1914, pp. 197-203. I don't work with the paper archives here at Ediosn NHS, just sound recordings and phonographs. Please contact our Archivist Lenny DeGraaf, email: leonard_degraaf<at>nps<dot>gov > Is the equipment still around somewhere? No, there is no 1940s-1950s Ediphone Blue Amberol manufacturing equipment at Edison NHS. You might try asking at the Henry Ford Museum. -Jerry Fabris