This book makes available in one source descriptions of most of the major archival collections in the field of labor history at U.S. libraries. Of considerable value to the many scholars and students of the labor history movement in the United States, it includes descriptions of both large and small collections, and covers libraries whose holdings deal primarily with workers and unions as well as those with broader collections that include material on immigration, social welfare, and radicalism.In view of the fact that labor history has become, over the past generation, one of the more active and seminal fields of American historical studies, with major institutions and many smaller ones throughout the country now represented, this volume will serve as a basic but detailed guide to the major record holdings.