Krug said:You can ask Michael Moorcock at http://www.michaelmoorcock.com I believe.
Olive said:Unfortunately, that site doesn't allow any access to anything!
Although I wouldn't call any of my answeres definitive, I can assure you he's in there.
I have those editions, and you can rest assured Moonglum is there, of course! Michael wouldn't have allowed their publication if it weren't the case, I can assure you. On the contrary, the US White Wolf editions are the preferrable ones. The only thing missing (in all omnibus editions, US and UK ones, so it seems) is the short prelim to The Stealer of Souls.