But thanks for the story about Mary Pyle! I'll try an alibra search for the book.
It is mentioned in that book, but also others. But they would have to be printed after Pope John Paul became pope.
The visit occurred in 1947 by the pope-to-be.
I know I have seen it other books, but I would have to research (I have about 7 to 8 books on Padre Pio).