In the past several years, researchers and the general public alike have become increasingly concerned about health risks associated with American football, as recent research has linked football-related concussions to Chronic Traumatic Encephalopathy (CTE). Although this research about CTE is new, concern about the health risks associated with this popular sport date back over 100 years. In 1905, the Salt Lake Tribune reported that nineteen high school and college level football players had died from injuries related to the sport over the past year, sparking an early twentieth century movement to reform the dangerous sport. From the AAAS's Science in the Classroom series comes this collection of educational resources related to the history of health concerns regarding American football. These resources include 1905 newspaper articles from the Library of Congress's archive, contemporary news articles, and an annotated research guide. These resources are accompanied by a series of suggested classroom activities, discussion questions, and relevant learning standards, which visitors will find by downloading the Educator's Guide. In addition to addressing CTE in football players, some of these resources address how CTE impacts military veterans.