GRGR(0): published editions, covers

[the Robot Vegetable]

	I am curious how many editions of _GR_ there are.  I
have a penguin published 1995.  Several of my friends glanced
at it and commented that it was a new cover.  I am familar with
the bright sun cover,  but am not sure if I am remembering it
very well now.  How amny different cover illustrations have
there been?
	This one is: Gerat W-4 (Three View) Aircraft Model V2,
1944.  National Air and Space Museum, Smithsonian Institute.
Drawing #SKW970B.  It's a blueprint.

	veg