Welcome to these forums, Steelhead!
Trying to get a working printer for the LC is probably going to be really hard if at all possible. So I'd suggest another tack. If the files you're looking for can be accessed with current software* on current Macs or Windows boxes, try getting the files off that old Mac. Since the LC630 doesn't have any networking hardware, consider pulling the hard disk and hook it up to a current Mac using a HD enclosure or a USB HD adapter w/power supply.
*) If there is no such software, see if you can get enough data on the screen to copy it via screenshots. Also, check if the software on the LC has a print-to-file option; if it does, you can do that, get the files off the LC and then see if you can print it elsewhere.