Battle Cry of Freedom (book) For 1862 song, see Battle Cry of Freedom. Battle Cry of Freedom: The Civil War Era is a Pulitzer Prize-winning work of history published in 1988 by James M. McPherson.
The 1972 Dolphins ' win is the only perfect season in NFL history. The only team with multiple Super Bowl appearances and no losses is the Baltimore Ravens, who in winning Super Bowl XLVII defeated and replaced the 49ers in that position.
The Detroit Lions, Cleveland Browns (current iteration), Jacksonville Jaguars, and Houston Texans are the only current teams to have never played in a Super Bowl. Detroit did play in NFL Championships prior to the establishment of the Super Bowl in the 1966-67 season, as did the original Cleveland Browns. The latter two are expansion teams (as is the new iteration of the Browns) so they don't have as many years of history to work with. Cleveland is weird because the original Cleveland Browns team that became the Ravens never played in a Super Bowl during their time in Cleveland, but did play (and win) as the Ravens.