Gettysburg Address
From Tardis Wiki, the free Doctor Who reference
The Gettysburg Address was a speech delivered by President Abraham Lincoln at Gettysburg in 1863, which redefined the purpose of the Union in fighting the American Civil War. The First Doctor, Ian Chesterton, Barbara Wright and Vicki Pallister watched the speech on the Time-Space Visualiser. (TV: The Chase)
The Fifth Doctor's companion Peri Brown later expressed an interest in seeing Lincoln deliver the address first hand. (AUDIO: The Roof of the World)