Milk sickness is a kind of poisoning, characterized by trembling, vomiting, and severe intestinal pain, that affects individuals who ingest milk from a cow that has fed on white snakeroot plant, which contains the poison tremetol. Although very rare today, milk sickness claimed thousands of lives among migrants to the Midwest in the early 19th century, especially in frontier areas.

Lincoln's coffin was moved 17 times (and opened 5 times) before finally being laid to rest in Oak Ridge Cemetery in Springfield, Illinois.

Legend has it that when Stephen Douglas came to the famous Lincoln-Douglas debates accompanied by a brass band that Lincoln took out his own harmonica and quipped, "Mr. Douglas needs a brass band but the harmonica will do for me."

To broaden his coalition to include War Democrats as well as Republicans, Lincoln ran under the banner of the new Union Party.

Lincoln made five appointments to the United States Supreme Court: Noah Haynes Swayne (1862), Samuel Freeman Miller (1862), David Davis (1862), Stephen Johnson Field (1863), and Salmon Portland Chase (1864).

He practiced law without a degree. Lincoln had about 18 months of formal schooling.

Lincoln is largely responsible for the institution of the Thanksgiving holiday in the United States. While it had been celebrated sporadically and on irregular dates prior to his administration, it was Lincoln who officially declared the final Thursday in November to be a day of Thanksgiving.

At the last minute, Grant decided to go to New Jersey to visit his children instead of attending the play.

President Lincoln vetoed seven bills, of which two were regular vetoes and five were pocket vetoes. None was overridden.

The United States Mint first released a penny depicting Abraham Lincoln in January 1909, the centennial year of his birth.