|image source: http://www.duneinfo.com/unseen/jodorowskys-dune-uncovered/31|
a) Concept art for Jodorowsky's Dune showing scene with Duke Leto attempting to poison Baron Harkonnen references the Henu Barque? I don't know who the artist is but this would have been for the failed Dune Project that was gaining ground in 1975 before it collapse
b) White pillow like forms and Baron Harkonnen.
c) White pillow like forms with pillars and colon like gas with human
d) Oryx head with fan and bull with snakes. There is a small ox head on the henu barque but it's very small an feint, facing the other direction from the oryx head
e) Kestrel head and ceiling dome
f) Crouching man's arms and snake heads