Harry Truman in 1949 was the first to have his inauguration televised.
The first President to say the words "so help me God" as the end of his Presidential oath was President Chester A. Arthur in 1881. Each President since then has used those words.
The inaugural oath of office. Before the President-Elect takes the oath, he is not the President. After he takes the oath, he is President.
January 20th
The first time the presidential oath of office was taken in January was at the beginning of Franklin D. Roosevelt's second term on January 20, 1937.
1963, immediately following the death of President Kennedy.
President Abraham Lincoln's bible.
United States President Herbert Hoover took the Presidential Oath on March 4th, 1929 in the United States Capital. This oath was administered by William H. Taft.
President Richard Nixon resigned in 1974 and the Vice President Gerald Ford took the oath to be President of the United States of America
Usually in Washington DC, in a public ceremony, on or near the steps of the US capitol building. If the president dies in office and the Vice-president is sworn in as president, he takes the oath at the first convenient location. Calvin Coolidge took it a his father's home where he happened to be visiting. Lyndon Johnson took it on the Presidential plane at an airport in Dallas.
Article 2 of the Constitution outlines presidential and vice presidential, terms of office, succesion, duties, oath of office, impeachment, and executive powers.
The U.S. Constitution says that the president must take the presidential oath and be sworn in; usually, it is the Chief Justice of the Supreme Court who administers the oath. If a president is re-elected, he still has to take the oath of office a second time.
James MonroeThe first president to take the oath was George Washington.