Transportation Communications International Union
The Transportation Communications Union (TCU) is the successor to the union formerly known as the Brotherhood of Railway Clerks and includes within it many other organizations, including the Brotherhood of Railway Carmen of America and the Brotherhood of Sleeping Car Porters, that have merged with it since 1969. == Change of name == The union was founded in 1899 by 33 railroad clerks meeting in Sedalia, Missouri, who formed an organization named the "Order of Railroad Clerks of America".
Source: Wikipedia — Transportation Communications International Union (CC BY-SA 4.0)