* Official name: Louisiana Purchase Exposition
* Category: World's Fair
* Theme: Celebration of the centennial of the Louisiana Purchase on April 30, 1803
* Preparation began: 22 September 1889
* Inauguration: 30 April 1904 in front of the Louisiana Monument
* Duration: April 30 to December 1 (216 days)
* Location: Forest Park, west of St. Louis
* Area: 500 hectares
* Emblems: Louisiana Monument, Festival Hall, Pike Amusement Park
* Organisation: Louisiana Purchase Exposition - Company and Government Representative Commission with nine commissioners
* Officers: President of the Louisiana Purchase Exposition Company: David R. Francis
* 1st Vice President: Corwin Spencer
* Treasurer: M. H. Thompson
* Secretary General: Walter B. Stevens
* Site Manager: Isaac S. Taylor
* Director of Exhibitions/Exhibits: Frederick J.V. Skiff
* Financial Director: Norris B. Gregg
* Chairman of the Board of Lady managers: Mrs Daniel Manning
* Exhibitors: 15,009 American exhibitors
* Layout: 16 departments, 144 groups, 802 classes
* Chief architect: Isaac S. Chief architect: Isaac S. Taylor, assistant Emmanuel L. Masqueray
* American pavilions: 50
* International theme pavilions: 14
* Foreign pavilions: 21
* Visitors: 9,694,855 - 30 million expected
* Entrance fee: Adults US$ 0.50, children US$ 0.25; free admission for jury members and congressmen as well as for workers
* Expenditure: Between 25 and 31.5 million dollars
* Income: $26 million (in addition to admission fees and exhibitor contributions, $5 million from the city of St. Louis and $5 million in share capital)
* Jury members: 1,048
* Awards: 39,158 Grand Prix, gold, silver and bronze medals 38% of all awards won by Americans: 15,009 awards, including 837 Grand Prix and 3,955 gold medals