יסוד ושורש העבודה (set of 2)

He was only fourteen years old, a regular kid from Chicago, when he left his family and his school to go and learn in a small yeshiva in a far-off city. The name of the small yeshiva was Mir. The name of the city was Yerushalayim. And the name of the boy? Nosson Tzvi Finkel.