Hi Pete,
Found 'em! Here's the details on each of your guitars:
77-893
Nothing in the file about the build except that it was originally made for Thoroughbred Music in Tampa, FL. The original owner was in Florida. The original owner sent it in for repair in September 1978. It needed a new fingerboard.
There is a second registered owner is Georgia. Then you!
For 85E3500 there's a little more on the build:
top: Maple
body: Mahogany
neck: 3-piece Maple
scale: 25.50 long
fingerboard: Ebony
inlays: Pearloid (plastic) ovals
birthday: February 27, 1985
originally made for: not recorded