Charts & Graphs arts & letters Play It Again, Uncle Sam Campaign songs used by Republican and Democratic presidential nominees, 1986–2008. View
Charts & Graphs states of war Between the Devil and the Deep-Blue Sea A U.S. serviceman’s chances of death in battle. View
Charts & Graphs politics Ages of Empire Ages at which rulers assumed power and the lengths of their reigns. View
Charts & Graphs communication The Medium and the Message Message delivery services throughout history. View
