Ley Sector is a supplement which details 16 new subsectors and 411 new planets located on the outer fringe of the Imperium in an area not covered by material published by Game Designers Workshop (GDW).
"[1] In the July 1981 edition of Dragon (Issue #51), Tony Watson didn't like the fact that planet names were not printed on the map, but had to be looked up by referencing the proper subsector found in the guide book.
Watson gave a lukewarm recommendation: "Those referees who have already fully developed their own subsectors might find the new encounter tables and events listing to be useful.
"[3] In the December/January 1982 edition of White Dwarf (Issue #28), Trevor Graver also noted the names of planets were missing from the map and required reference to the guidebook.
He concluded that "Ley Sector is useful to those people wishing to expand the knowne Imperium, but the standard of Judges Guild has dropped despite less typos.