•Why it earns a slot
Why it earns a slot: it inverts the pioneer novel by making the land's real monument not a man's conquest of it but a woman's endurance on it, told entirely through the guilt of the man who left.
A lawyer spends a lifetime failing to forget the Bohemian immigrant girl who taught him what the Nebraska prairie actually meant.
This distillation is written from the freely available original, which is always the better read when you have the time: Project Gutenberg.