America's first nudist organization was founded in 1929, by 3 men.

In 1894 there were only 4 automobiles in the US.

In 1900 the average age at death in the US was 47.

In 1960, an estimated 4,000 people were over 100 years old in the U.S. By 1995 the number had jumped to 55,000.

The number of triplets born in the US in 1994 (4,594) was more than triple the number born in 1971 (1,034), an increase attributed to older age of the mothers and the use of fertility-enhancing drugs and techniques.

The states of Washington and Montana still execute prisoners by hanging.

US Presidents buried in Washington, D.C.: William H. Taft, Woodrow Wilson, and John F. Kennedy.

US Presidents who died on July 4th: John Adams and Thomas Jefferson died in 1826, James Monroe died in 1831.

US presidents who have been assassinated: Abraham Lincoln in 1865, James A. Garfield in 1881, William H. McKinley in 1901, and John F. Kennedy in 1963.

US Presidents who never attended college: Grover Cleveland, Abraham Lincoln, Harry S Truman, and George Washington.

US Presidents who never had children: George Washington, known as the "Father of the Country," James Madison, Andrew Jackson, James Polk, James Buchanan, and Warren Harding.

US Presidents who never held any other elective office: U. S. Grant, William H. Taft, Herbert Hoover, Dwight D. Eisenhower.

US Presidents who owned slaves : George Washington, Thomas Jefferson, James Madison, Andrew Jackson, John Tyler, James K. Polk, Zachary Taylor, Andrew Johnson, and Ulysses S. Grant.

US presidents who served an entire term without a vice president: John Tyler, Millard Fillmore, Andrew Johnson, and Chester Arthur.

US presidents who were survived by their fathers: John F. Kennedy and Warren Harding.