1968 National Football League Dallas Cowboys at Cleveland Browns, Eastern Conference Chapmionship, 1968 December 21, FBP620-01-23, Box: 2. Professional Football Playoff and Championship Game Programs Collection, FBP_620. University of Notre Dame Rare Books & Special Collections. https://archivesspace.library.nd.edu/repositories/3/archival_objects/2112503 Accessed January 10, 2026.