The genre was first popularized in the U.K. during this era, with books like Barbara Stanton’s 1943 wartime romance W.A.A.F. Into Wife, the cover of which featured a woman in uniform being ...

and romance novels, should be published with a suggested reading age. “In world where book covers can be deceiving,” wrote Sanziana-Dana, “it’s very easy to mistake a book that is age ...