A Stunningly Pedantic Question

I sort my roleplaying games by publisher. Now some of you probably find this a bit anal-retentive, but believe me, I have no choice. If I didn't sort my RPGs I'd never find some of them again. This way, if I want to find my copy of Reich Star, Valley of the Pharaohs or Spawn of Fashan, I look up the publisher and find the game in the appropriate area of my shelf. You wouldn't want Spawn of Fashan to disappear forever, now would you?

I was putting the Serenity RPG in my logbook, recorded the publisher as "Margaret Weiss Publishing, LLC," and stopped. Up until now, I put Steve Jackson Games between Stellar Games (Expendables) and TAG Industries (The Well of Souls Roleplaying Game). I'm not sure that's the right way to do it, though. Should Margaret Weiss Publishing go in the "M" section or the "W"? I don't know, but some of you English majors might.