Shepperd died of [[cancer]] on March 8, 1990 at the age of 74 at his home in Gladewater. Shepperd, his son, and his daughter are interred at the private Shepperd family cemetery in Gladewater.<ref>{{cite web|url=http://www.txgenes.com/TxGregg/Cemeteries/JohnShepperdCem.html|title=John Shepperd Cemetery|publisher=txgenes.com|accessdate=July 21, 2009}}</ref> | Shepperd died of [[cancer]] on March 8, 1990 at the age of 74 at his home in Gladewater. Shepperd, his son, and his daughter are interred at the private Shepperd family cemetery in Gladewater.<ref>{{cite web|url=http://www.txgenes.com/TxGregg/Cemeteries/JohnShepperdCem.html|title=John Shepperd Cemetery|publisher=txgenes.com|accessdate=July 21, 2009}}</ref> |