| Alexander C.T. Geppert, Freie Universität Berlin, Germany Jean Coffey and Tammy Lau, California State University, Fresno “International Exhibitions, Expositions Universelles and World’s Fairs, 1851-2005: A Bibliography” (Updated and expanded November 1, 2006)
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Chicago Historical Society |
| Ruprecht-Karls-Universität Heidelberg, Germany Literaturliste der UB Heidelberg zur Geschichte de Weltausstellungen |