Izložba kupovine Louisiane
- Online Exhibition by the Missouri Historical Society
- Homepage of the 1904 World's Fair Society
- 1904 World's Fair pages by Society member Mike
- At The Fair by 1904 WF Society member Lee
- Virtual Tour of the 1904 World's Fair
- Online Version of 1904 Illustrated Guide to the Fair
- Website for Forest Park (urban park located roughly on the site of the fair)
- Louisiana Purchase Exposition collection at the University of Delaware Library
- Another online exhibit of fair memorabilia
- An Edison company film of the Asia pavilion, at the Library of Congress
- The World's Greatest Fair na Internet Movie Database
- Web site for "The World's Greatest Fair. An award winning documentary directed by Scott Huegerich and Bob Miano of Civil Pictures.
- A large collection of stereoviews of the fair
- The Forest City
- History of the Louisiana Purchase Exposition
- Official Catalogue of Exhibitors: Universal Exposition of 1904
- Index to The Universal Exposition of 1904
- Index to The World's Fair Bulletin
- Final Report of the Louisiana Purchase Exposition Commission at gutenberg
- 5/7/1904;The Opening of the Louisiana Purchase Exposition
- 7/16/1904;The Festival Hall, the Central And Dominating Structure of the Louisiana Purchase Exposition
- 8/6/1904;The Trained Animals At the World's Fair
- 8/20/1904;Pumping Machinery At the St. Louis Fair
- 8/27/1904;The War Department's Exhibit At St. Louis Fair.
- Information on the great pipe organ in Festival Hall that was installed in the John Wanamaker department Store in Philadelphia.
- The effect of the fair on Washington University
- Arthur Younger Ford (1861–1926) Photograph Albums - includes 69 photos taken at the fair.
Exposition Universelle (1900)