Abstract: Records, 1911-2004 (bulk 1952-2004), of the political office in Wisconsin of the United Transportation Union (UTU), a national union established in 1969 to consolidate into one body railway conductors, brakemen, locomotive firemen and engineers, railroad trainmen, and switchmen, all of whom had previously had their own unions. The Wisconsin Legislative Board exercised little direct administrative responsibility for state locals, instead it monitored state and federal legislation and the regulatory actions of the Public Service Commission and endorsed particular legislative candidates and provided campaign support. The records include organizational reports, correspondence of legislative representatives of the UTU and their predecessors in the Brotherhood of Railroad Trainmen (1950s-1960s) relating to endorsement of particular legislative candidates, complaints concerning work rules, and files from Wisconsin locals.