Hello James:

For starters, I have located the following.

    CENTRAL DATA MANUALS
    1.  2650 System Manual Supplement
        (This manual contains schematics and pictorial views of the main board)
    2.  Central Data Basic   (I assume this is the 8K version). It is complete with assembly listing.
    3.  12 K Basic
    4.  Editor Assembler
    5. Character Generator
    6. S-100 Extender Board
    7.  Disk Operating System Manual
    8.  Cover and first two pages of Star Trek Manual.

(Most of the above manuals are complete but some have loose pages and possibly pages missing.)

    OTHER DOCUMENTATION

    SHUGART  SA400 Minifloppy
    OEM Manual

I probably have yet other paper documentation. I will continue to search a while longer. I am looking for
BASIC printouts, the balance of the Star Trek manual, and the Signetics 2650 Reference manual (from Signetics).
I cannot remember if the Star Trek Manual included an assembly listing. Hopefully it did and I can locate it.

Aside from paper documentation, I will search for cassette tapes and floppy disks.

My 2650 System is still intact with the ROM's still in place. It has a self designed and self made parallel printer
interface and a self made TV style power supply with a large electrolytic.  At this point, I do not have any
plans to try to turn it on. At some point in the future, if  I install a modern power supply, I might give it a try.

Have a good one,
Stan