When the millstone rolls through the door, Charles clearly moves out of the way and it misses him completely.
Laura refers to Albert as "Little Lord Fauntleroy" when he decides to wear his Sunday best to school to impress the new teacher. Little Lord Fauntleroy was not introduced until November 1885, just about the time Laura Ingalls married Almanzo Wilder. This reference to him was several years early.
Rod McGaughy plays a character named Jack. Merlin Olsen as Jonathan Garvey calls out "Rod!", after the millstone went through the door.
Caroline would not have been spoonfeeding Charles in bed with a broken right arm. He was lefthanded.