22 NOCs (Nations)
2,008 athletes (37 women, 1,971 men)
110 events

London 13 July 1908. The British delegation.
Official opening of the Games by: His Majesty The King Edward VII
Lighting the Olympic Flame by: The Olympic flame was first lit during the opening ceremony of the 1928 Olympic Games in Amsterdam.
Olympic Oath by: The first athletes' oath was sworn at the 1920 Olympic Games in Antwerp, Belgium.
Official Oath by: The first officials' oath was sworn at the 1972 Olympic Games in Munich.

Famous for not winning: When Dorando Pietri (ITA-athletics) entered the stadium at the end of the marathon, it was immediately apparent that something was wrong. [Full story]

In 1906, Mt. Vesuvius erupted near Naples. The Italian government felt it needed the money to rebuild the area around the volcano and asked that the Games of the IV Olympiad in Rome be relocated. [Full story]

Union of two countries under the same name: Australia and New Zealand were represented by a single delegation, under the
name of Australasia. [Full story]