From another post at You Write (see tab above) I learn that M E Foley’s sixth-grade teacher:

brought back from Ireland a complete set of Rosemary Sutcliff’s books, even though I’m sure they were already available in the US. Maybe she felt books printed in Ireland were more valuable than local copies, but the domestic version I got from the library and read over and over had quite an impact. On my first trip to England—my honeymoon—the one thing I absolutely had to see was Hadrian’s Wall.

Source: Visiting Viroconium | M E Foley’s Anglo-American Experience Blog.