AbstractThis article deals with one of the many neglected chapters of the global history of the Knights of Labor: the events that led the Knights to participate in one of the great international events of the age, the Paris Exposition of 1889, and their attempts to found their assemblies, as they called their branches, on French soil. Drawing on voluminous correspondence between the leaders of the Knights of Labor and their enthusiasts in France, and on the Order's own journal and the proceedings of its conventions, this article analyzes the reasons why the Knights failed to capitalize on their participation in the Exposition, illustrates many of the failings of leadership and organization that afflicted the Order both at home and abroad, and demonstrates some of the problems and potential solutions that faced French labor activists at the end of the nineteenth century.