Archive Credits
Hard Risks: Concussions in Sports, From the Boxing Ring to the Gridiron
Related VideoAlamy
Associated Press
Associated Press / AP / BOSTON UNIVERSITY CTE CENTER
Baylor College of Medicine
BPI
Carson Entertainment
Chicago Film Archives
The Conus Archive
Corbis Images
eFootage
F.I.L.M. Archives
Florida Moving Images Archive
Getty Images
Historic Films Archive
Houston Chronicle
ITN Source
Heinz Kluetmeier
Los Angeles Times
Marty Katz
NewsHour Productions LLC
Steve Raymer / NG Image Collection
Polaris
Pond5
Producer's Library
Shutterstock
Stanford University Film Collection
Stock Video
Streamline Films
Texas Children's Hospital
University of Chicago Library
WGBH Media Library & Archives
WPA Film Library
ADDITIONAL ARCHIVAL MATERIALS
Contemporary news footage was originally broadcast by
ABC News, CBS News, CNN, Fox News, MSNBC, NBC News and PBS NewsHour
Contemporary news articles were originally published by
The Boston Globe, The Chicago Tribune, The Guardian, The Los Angeles Times, The New York Times and The Washington Post
Presidential Libraries of Harry S. Truman, John F. Kennedy, Lyndon B. Johnson, Richard Nixon and Ronald Reagan
ADDITIONAL ARCHIVAL MATERIALS
ABC
ABC Sports
AJAM
Atari
Bloomberg
Buena Vista Pictures
C-SPAN
CBC
CRC Press
ESPN
FBI
FOX
Hanna Barbara
High Frontier
Immune Deficiency Foundation
International Women's Health Coalition
Library of Congress
NASA
National Archives & Records Administration
National Football League
NBC
Paramount Pictures
Texas Children's Hospital
Texas Department of State Health Services
TMZ
Twentieth Century Fox
UMG
United Artists
Universal International Pictures
University of Iowa
Warner Bros
Warner Records
U.S. Department of Defense
U.S. Environmental Protection Agency
U.S. Fish and Wildlife Service
U.S. Food & Drug Administration
U.S. Geological Service
U.S. Marine Corps
U.S. National Park Service