Directory of national and international labor unions in the United States. - 1 online resource (7 volumes) : illustrations. - - Began with: 1955; ceased with: 1969. - Bulletin . - Bulletin of the United States Bureau of Labor Statistics. . CRDP Program record. Supplements accompany some issues. ISSN: LCCN: 2019230482 Subjects--Topical Terms: Labor unions--United States--Directories.Labor unions. Subjects--Geographic Terms: United States. Index Terms--Genre/Form: Directories. GPO Item No.: 0768-A-01 (online) Gov. Doc. Class. No.: L 2.3: