Hallfiry reporting in. I'm the guy who originally uploaded the Rockraiders comic to imgur and mentioned it on Wikipedia. My Lego World Club magazines are pretty damaged, since I didn't treat them very well when I was a child. But because you guys seem to have such interest in them, here's a scan of the Rockraiders issue of Lego World Club (9-10/1999):
[for link see list below]
The PDF contains only pages 1-12 and 21-32. The eight pages 13-20 are ripped out of my physical copy and seem to be lost.
Pages 10/11 and 22/23(which is 14/15 in the PDF) should make you drool
I'll check the attic for more issues and scan them all tomorrow.
EDIT: Found the following issues:
2002: 1-2(complete), 3-4(complete), 5-6(complete+Extrablatt), 9-10(complete)
2006: 4(complete), 5(complete)
I'll scan them in chronological order, starting with the oldest.
Found some more stuff!
Lego World Club mach mit!
1999: 1-2, 5-6, 11-12
Lego World Club shop (later "Shop At Home")
1999: 3-4, 5-8, 9-10, 11-12
2000: 3-4, 5-8
2001: 5-6, Fall-Winter