Lincoln's co-workers and staff often wondered why he indulged this little "hellion," Tad. The Lincoln Memorial in Washington, D.C.

Tad accompanied his father to major speeches, to review the troops and in the evening, reclined next to the president’s desk as Lincoln heard pardon requests—sometimes late into the night.

Willie Lincoln was the most lovable boy I ever knew, bright, sensible, sweet-tempered and gentle-mannered. Tad had a quick fiery temper, very affectionate when he chose but implacable in his dislikes.

“ [Abraham and Tad] went everywhere together — to review troops, to major addresses, when he traveled to see the Civil War front. Tad Lincoln was always at his side,” Mr. Arroyo said.

Ellison hopes the chest of drawers belonged to Tad Lincoln, the fourth and youngest child of President Abraham and Mary Todd Lincoln. The boy, born April 4, 1853, died July 15, 1871.

Tad was the youngest after son Willie, who died years before. Tad himself would die on July 15, 1871 and further sadden Lincoln’s grieving widow.

Author and journalist Raymond Arroyo talks about his new book “The Magnificent Mischief of Tad Lincoln” and the impact a son had on a father during a time of war and division.

The Tad Lincoln photograph, now on display in the museum's Treasures Gallery, is a colorized image that was probably taken by famed Civil War photographer Mathew Brady.

But as wild as they could be, Lincoln’s kids were seldom disciplined. After our 16 th president was sworn in, Willie and Tad ran roughshod over his staff.

Thomas "Tad" Lincoln died 6 years after Lincoln's death, making the former president's statement false. Taking to social media users voiced their opinion on the blunder.

Today's East Room visitors stand where Abraham Lincoln's son Tad played with his pet goats, Teddy Roosevelt arranged a wrestling match for his guests, Susan Ford held her senior prom and Amy ...