Jame:
it was one of the old land-rents. JG didn't sign over the data for use by GDW, so GDW invalidated it.
JG's "Quadrant" is 4 sectors (2x2, and listed in no particular order):
Ley
Glimmerdrift Reaches
Maranatha-Alkahest
Crucis Margin.
This domain sized chunk is well done (for the era) save for the map, which shows only locations and routes. Comparable detail to Sup 3.
*I* like them. *I* was mad when Atlas decanonized all of them (but replaced only 2 of them).
I wish we had the mandanin codominion in the OTU.....