Sách nói: Fame and Fortune Weekly No. 6: Building a Railroad

Don and Gil Winthrop inherited their father's business to construct a railroad in a developing location in upstate New York. Engineers themselves, though young, they decided to carry on his work despite their inexperience. They have to fight their way through troubles instigated by a competing contractor, and a vindictive foreman of his who holds a dark secret of his own. (Summary by Keith Salis)