This book provides a detailed account of the investigations carried out into the United Electrical Radio and Machine Workers of America in Pittsburgh and Erie, PA during the 1950s. Focusing on efforts to curb communist infiltration into labor unions, this book offers an eye-opening look into the tensions of the time and the challenges of maintaining national security in an era of shifting ideologies. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.