A 10-year-old child prodigy cartographer secretly leaves his family's ranch in Montana where he lives with his cowboy father and scientist mother and travels across the country on board a freight train to receive an award at the Smithsonian Institute.
T.S. Spivet
Dr. Clair
G.H. Jibsen
Father
Gracie
Layton
Roy
Giant Hobo
Two Clouds
Ricky
Lecturer
Lecturer
The vigilant
Marge
Policeman
Cathy
Smithsonian President
Judy
Jibsen's Secretary
Little Boy
Towncar Driver
Reception Waitress
Reception Waitress
Smithsonian's Receptionist
Reception Guest
Reception Guest
Reception Guest
Reception Guest
Lady at train station
Waiter
Photographer
Perpetual motion machine presenter
Airport Officer
Smithsonian Scientist's Date
Figuration
Student Butte Museum
