Games Workshop occasionally digitizes older lore sections, artwork, and white dwarf articles from this era for subscribers of their official app.
While Games Workshop has removed 6th Edition books from their active digital storefronts, retro tabletop communities frequently maintain legal scanned archives for out-of-print, historical game preservation. 6th Edition Space Marine Codex Pdf
The Legacy of the 6th Edition Space Marine Codex: A Tactical and Historical Retrospective 6th Edition Space Marine Codex Pdf