Today, at an antique mall, I found, for $2 each, three Edison discs (also known as "Edison diamond discs"), big, thick (1/4"), 78-size records. I'm quite sure they're not valuable or anything, but I'd like to know more about them: when they were made, what the serial numbers etched into them refer to, who the artists were, etc. Does anyone know how to learn more about these things, either online or in print? [more inside]
posted by Dr. Wu on Mar 20, 2005 - 12 answers