|This seems to be a conversion job -- because it|
mentions that to get the most out of it you should
pick up the original Lightspeed books and, of course,
Mongoose's Traveller books. But in theory
you can use them with Stars Without Number.
|This one seems to be a companion book that outlines|
threats that Rangers (from the Interstellar Federation)
regularly encounter -- the Lightspeed equivalents of
the Aliens, Predators, and (maybe) the Borg.