Pattern Makers' League of North America

The Pattern Makers' League of North America (PMLNA) was a labor union representing patternmakers in the United States and Canada.The union was founded on May 18, 1887, in Philadelphia, as the Pattern Makers' National League of North America.It was chartered by the American Federation of Labor in 1894, and adopted its long-term name in 1898.[1][2] In 1955, the union transferred to the new AFL–CIO, and by 1957, it had 15,000 members.[4] On October 1, 1991, it merged into the International Association of Machinists.
International Association of Machinists and Aerospace WorkersTrade unionAFL–CIOlabor unionpatternmakersPhiladelphiaAmerican Federation of LaborInternational Association of MachinistsJames WilsonPattern Makers League of North America v NLRB