That's a picture of all the hardcover EC Library books I own.
The books are 31x24 cm (approx. 12.5x9.5 inches) and the art is in black & white.
Most have slipcases (never got one with my Haunt of Fear books).
Since I was the only owner so far they're in great condition.
Unfortunately the Weird Science slipcase and books 1 and 2 arrived already slightly damaged at my doorstep (I presume they got bumped on the corner during transportation. It isn't too bad, but you can see for yourself in the pictures at the end of this post).
Weird Fantasy - 4 hardcover books in one slipcase.
Contains Weird Fantasy #1-22.
Vault of Horror - 5 hardcover books in one slipcase.
Contains Vault of Horror #12-40.
Tales from the Crypt - 5 hardcover books in one slipcase.
Contains Tales from the Crypt #17-46.
The Haunt of Fear - 5 hardcover books without slipcase.
Contains The Haunt of Fear #1-28.
Aces High - 1 hardcover book originally shrink-wrapped.
Contains Aces High #1-5.
Impact - 1 hardcover book originally shrink-wrapped.
Contains Impact #1-5.
Valor - 1 hardcover book originally shrink-wrapped.
Contains Valor #1-5.
Weird Science - 4 hardcover books in one slipcase.
Contains Weird Science #1-22.
See pictures below for the creased corners:
