References
- Available Biographies of California Natives At Carlisle
- Calac Succeeds Busch
- Indians Again Elect Calac
- What's an Oorang?
- Peterson, Robert W. (1997). Pigskin: The Early Years of Pro Football. Oxford University Press. ISBN 0-19-511913-4.
- Wheeler, Robert W. (1981). Jim Thorpe: World's Greatest Athlete. University of Oklahoma Press. ISBN 0-8061-1745-1.
- Miller, Jeffrey (2003). "Ben Lee Boynton:The Purple Streak". Coffin Corner (Professional Football Researchers Association) 25 (3): 1–3.
- Braunwart,Bob; Bob Carroll; Joe Horrigan (1981). "The Oorang Indians". Coffin Corner (Professional Football Researchers Association) 3 (1): 1–17.
- The Team That Invented Football
- Jim Allinger Buffalo Legend
- Ghosts of the Gridiron Union Quakers
- American Indian Hall of Fame Joe Guyon
- Ongoing Research Project Uniform Numbers of the NFL Pre-1933
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