The NFL's 1970s: Merger, Feud, Undefeated Seasons Compared (Books) The 1970s were a crucible for the NFL, a decade that reshaped the league's identity and left behind stories as vivid as any on the field. Three books unravel this era with distinct lenses: The NFL in the 1970s: Pro Football's Most Important Decade offers a sweeping chronicle of the league's evolution, from the aftermath of the AFL-NFL merger to the rise of star quarterbacks like Roger Staubach and Ken Stabler. For those craving a fiery narrative, Ten-Gallon War dives into the Dallas feud-a clash of titans between the NFL's Cowboys and the AFL's Texans, capturing the tension, drama, and cultural divide that defined the 1960s and spilled into the 1970s. Meanwhile, Undefeated focuses on the rarest of feats, dissecting the 1972 Miami Dolphins' perfect season and the broader lore of teams that defied the odds. Together, these works paint a mosaic of the 70s, where unity and rivalry, triumph and transition, collided to forge the modern NFL.