chunk: Their grandfather, a steel baron (James Henry Cordyce in the 1924 edition; James Henry Alden in the 1942 revision), comes at once to see them. The doctor suggests that he get to know them first before telling them who he is, so he is simply introduced to them as a friend of the doctor's. The children warm to his kindness and are surprised but delighted when they eventually learn that he is their much-feared grandfather. They go to live with him after all, and he has the boxcar transferred to his backyard for their enjoyment.