Ley Sector

Ley Sector is a science fiction role-playing game supplement published by Judges Guild for "Traveller" in 1980.
Contents.
"Ley Sector" details 16 new subsectors, and 411 new planets on the fringe of the Imperium.
Publication history.
The first of Judges Guild's licenses with companies other than TSR was for GDW's "Traveller" game. To complement the adventures and further describe the setting, Design Manager Dave Sering published four different background books that outlined a broad section of "Traveller" space called the Gateway Quadrant, from "Ley Sector" (1980) to "Maranantha-Alkahest Sector" (1981).
"Ley Sector" comes with a 32-page guide book describing 16 subsectors; and a 22" x 34" stellar map, with eight planetary maps printed on the reverse. There is also a table that outlines potential encounters with other ships, meteor showers and unmarked space minefields.
Reception.
"Ley Sector" received mixed reviews.
In the February 1981 edition of "The Space Gamer" (Issue No. 36), William A. Barton recommended the supplement, saying, ""Ley Sector" should add to the fun and enjoyment of anyone's "Traveller" campaign. I recommend it to all travellers seeking new worlds to conquer." 
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. He also found it "a bit more vexing... that the hexes are numbered in continuous sequence rather than as a series of eight-by-ten rectangles denoting subsectors... it’s a bit difficult to determine exactly what subsector is involved." 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."
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. Although he found fewer typographical errors than in previous Judges Guild offerings, the encounter tables were "rather bland". 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."