Company Credits
Production Companies
Distributors
- Warner Bros. Home Video (2008) (World-wide) (DVD)
Other Companies
- Clay County Museum and Historical Society (special thanks)
- Library of Congress (archive material)
- Northfield Historical Society (archive material)
- Patee House Museum (special thanks)
- Pinkerton Consulting & Investigations (archive material)
- St. Joseph Museum (archive material)
- St. Joseph Museum (special thanks)
- State Historical Society of Missouri (archive material)
- Streamline Films (archive material)
- Warner Bros. Museum and Corporate Archive (archive material)
