Philip Murray was born in Blantyre, Scotland, on May 25, 1886. He began working in the mines at age 10 and immigrated to the United States with his father, also a miner, in 1902. Murray's long career as a union official began soon after entering the mines in the United States. In 1905 he was elected president of his United Mine Workers of America Union (UMWA) local in Horning, Pennsylvania. Murray subsequently went on to become one of the most important American labor leaders of the twentieth century. As president of the Steelworkers Organizing Committee (SWOC), the United Steelworkers of America (USWA), and the Congress of Industrial Organizations (CIO), he played a pivotal role in the creation of industrial unions as well as the utilization of federal government support in the growth of unions in the United States. The Murray materials digitized here include a range of photographs and selected documents related to his labor activities and relationship with the National Association for the Advancement of Colored People (NAACP).