Screenshot by Lance Whitney/CNET

Google offers us a glimpse 150 years into the past with a new exhibit celebrating the anniversary of Abraham Lincoln's Gettysburg Address.

On November 19, 1863, President Lincoln delivered the short but famous speech that began with the words "Four score and seven years ago..." and then went on to commemorate the soldiers who lost their lives at the Battle of Gettysburg and the principles upon which the United States was formed.

Five known copies of the speech in Lincoln's handwriting exist, according to a Web site devoted to the 16th president. Google's new exhibit offers a look at one of those speeches, known as the Bancroft Copy.

Through Google's online exhibit, you can zoom in on every word of Lincoln's speech. The exhibit also displays the letter that the President wrote to George Bancroft, an American historian and diplomat, who had requested a copy of the speech. Documents and images about the Gettysburg Address complete the exhibit in an attempt to provide insight into one of the most celebrated speeches in American history.