Found an old discussion thread on Google Groups that I had posted in 2005 when I was fishing for info on CRT computer monitors for phosphor screen burns. And even another one from a couple days later. I ended up trying at first an Apple Monitor II because someone on craigslist gave me a bunch of free vintage Apple hardware which had been pulled from a science laboratory at Colorado University in Boulder. My first screen burn piece made from this donated hardware was published a year later in a 2006 "Vague Terrain" journal article called "Digital Minimalism" which has since disappeared from the Internet. I did eventually try an IBM 5151 screen burn as suggested by "RickE" in the discussion thread, and he was spot-on correct as this model has a BEAUTIFUL powerful electron beam that burns quickly. Considering that now a similar piece of screen burn art made a few years after mine is sitting on display in a large art museum in Manhattan and that the authenticity of my own endeavors have been openly questioned and ridiculed by the art establishment, I am delighted to find these date-stamped lumps o' data. Documentation via authoritative public archives such as Google Groups or Wikipedia is a free, easy method for those artists/inventors who might not have lawyers or industry heavyweights at their side.