Okay, I've tried these over at the NSFGE discussion forum but either the folks in the know aren't around or they don't know the answers...or they don't
care about the answers. (And no reason why they should, after all.) In the grand tradition of flogging dead horses, I thought I'd drag some of my queries over here and see if anyone can lend a hand.
Okay, preamble over. Can anyone identify the illustrators of the following:
CITY OF THE LIVING DEAD (UK quad poster 30x40")

THE WHIP AND THE BODY (German 1-sheet, but identical to Italian poster art)

RETURN OF THE BLIND DEAD (German 1-sheet, but image also used on Italian and Belgian posters - the latter may well have been re-painted by a Belgian artist, as was their wont)

And one more for clarification, really:
TENEBRAE (used throughout Europe, this art has been claimed by OPERA illustrator Renato Casaro - it's on his website gallery - but I've also seen Enzo Sciotti credited with TENEBRAE art, too. Anyone here confirm which design, if any, was Sciotti's?)

So, any clues...?