During the Black Hawk War, Taylor opposed the engagement of his 17-year-old daughter Sarah Knox Taylor to Lieutenant Jefferson Davis, the future President of the Confederate States of America. He did not wish his daughter to become a military wife, as he knew it was a difficult life. Nevertheless, Davis and Sarah Taylor married in June 1835 (when she was 21). She died three months later of malaria contracted on a visit to Davis' sister's home in St. Francisville, Louisiana.

Millard Fillmore was an animal lover and helped to establish the Society for Prevention of Cruelty to Animals (SPCA) branch in Buffalo, New York. Fillmore also had a sense of humor, and he revealed it in the naming of his ponies, Mason and Dixon--a reference to surveyors Charles Mason and Jeremiah Dixon, for whom the border between the Northern states and Southern states was named.

Buchanan was a Freemason, and served as the Master of Masonic Lodge No. 43 in Lancaster, and as a District Deputy Grand Master of the Grand Lodge of Pennsylvania.

Johnson was born in poverty in Raleigh, North Carolina and never attended school. He was apprenticed as a tailor and worked in several frontier towns before settling in Greeneville, Tennessee.

On March 1, 1872, President Ulysses S. Grant signed The Act of Dedication law that established Yellowstone National Park, which is widely held to be the first national park in the world.

When Russia went to war with Japan in 1904, Roosevelt offered his services as an arbitrator. After initial resistance, both sides came to the bargaining table in New Hampshire in 1905, where Roosevelt brokered the peace settlement that won him the Nobel Peace Prize.

Taft's 1912 result was the worst performance for any incumbent president seeking re-election, both in terms of electoral votes (8) and share of popular votes (23.2%). He was beaten by both Democrat Woodrow Wilson (41.8%) and Theodore Roosevelt (27.4%) who ran as the Progressive Party candidate after failing to secure the Republican nomination.

His first major priority was the passage of the Revenue Act of 1913, which lowered tariffs and implemented a federal income tax.

Laddie Boy was presented to President Harding by Charles Quetschke of Caswell Kennels and became a celebrity during the Harding administration. He had his own hand-carved chair to sit in during Cabinet meetings and was the first "First Dog" to be regularly covered in the national press. After the president's death in 1923, Florence Harding gave Laddie Boy to Harry Barker, her favorite Secret Service agent.

With golf's popularity surging during his tenure, Coolidge played out of obligation, and his game reflected it as he usually required double-digit shots on each hole. When successor Herbert Hoover moved into the White House, the only thing said to be left behind were Coolidge's bag of clubs.