Another American edition of this title that closely
resembles the first edition is the Triangle Books
edition. At least on the dust jacket. Both share the
same art work on the dust jacket cover, however
the Triangle edition has a black border at the
bottom with the words, "THE POIGNANT LOVE
STORY OF AN R.A.F. PILOT WHO SANK A
BRITISH SUBMARINE BY MISTAKE.

As is typical with the Triangle Edition, it is
dimensionally smaller, the front cover measuring
approximately 7-3/4" long X 5-1/4" wide. The
book cover of this edition is aqua with a decorative
rectangle in the center.

The front cover of the Morrow first edition
measures approximately 8-1/2" long X 5-3/4" wide
and has wavy blue lines running across a section of
the front.

The copyright page of the Triangle edition clearly
indicates that it is such, as shown below.