In English, Apr. 6, 1942-May 22, 1950; in English, with some text occasionally in Spanish, June 5, 1950-Oct. 20, 1952; in English, with a section in Spanish bearing title: El Sindicato, Nov. 3, 1952-July 5, 1954. Occasional text in French, Nov. 3, 1952-Feb. 9, 1953.
Formed by the union of: CIO news (Mine, mill and smelter workers. International edition), and: CIO news (Die casters edition).