Hi Rich ~ I've searched this book a number of times, but haven't found any reference to the early type levers or the other details that make my early A-250 different from others I've seen. I don't think I'll find it, but I'm now reading the book again cover to cover to catch anything I may have missed. Thanks for the suggestion. Best, Andy On Jun 22, 2007, at 6:27 AM, Rich wrote: > Have you checked the information in "The Edison Disc Phonographs > and Diamond Discs" by George > Frow?