.

The Wrightson cover for HOUSE OF SECRETS 107, April 1973.

[Linked Image from milehighcomics.com]

Which is nice enough.
But then you see this...

[Linked Image from i.pinimg.com]

...and you see that it was a far nicer 2-page wraparound cover, only half of which saw print.
You would think that an editor in the years after would have corrected that error and run the complete version as a wraparound cover on a later 100-page issue or 1977-1980 Dollar Book, or LIMITED COLLECTORS' EDITION. But somehow that never happened, and this 2-page version never saw print for DC.
The only place in print I've seen it is the A LOOK BACK book (1980, Chris Zavisa).