Hey Bob, try these sources. I don't really know what kind of luck you might have, but I've found that you can often bump into someone who owns or has access to data from way back when. Kid Nepro would be a particularly good bet, as you can e-mail them in NY, where they have mucho access to owners of all kinds of stuff. Its often who you know, y'know. And for starters, make an effort to locate a sympathetic ear at Korg.com. Actually, I don't think they HAVE an e-mail section, but if you're willing to call and put up with the interminable wait, you might luck out-that data is probably sitting in a box SOMEwhere, just waiting to be duped...good luck!
greytsounds.com
manymidi.com
northstarsamples.com
kidnepro.com (e-mail: kidnepro@aol.com)