• 26 Wisconsin Historical Society Library
• 8 WHS State Archives Preservation Facility
• 1 Memorial Library

• 32 Journals, Magazines, Newspapers

• 27 Labor unions
• 10 Postal service
• 5 Food industry and trade
• 3 Electric industry workers
• 3 Telephone companies
• 3 Westinghouse Electric Corporation
• 2 Hospitals
• 2 Railroads
• 2 Wages
• 1 Airlines
• 1 Amalgamated Food Employees Union. Local 590 (Pittsburgh, Pa.)
• 1 Armed Forces
• 1 Butchers
• 1 Communications Workers of America. Local 13000 (Philadelphia, Pa.)
• 1 Defense contracts
• 1 Employees' magazines, newsletters, etc
• 1 Food service employees
• 1 Government employee unions
• 1 Grocery trade
• 1 Insurance
• 1 International Union of Electrical, Radio and Machine Workers. Local 601 (East Pittsburgh, Pa.)
• 1 International Union of Electrical, Radio and Machine Workers. Local 617 (Sharon, Pa.)
• 1 Iron and steel workers
• 1 Labor supply

• 2 American Postal Workers Union. Keystone Area Local
• 2 Pittsburgh Metro Area Postal Workers Union
• 2 United States. Bureau of Labor Statistics
• 1 AFSCME. Local 1422 (Coatesville, PA)
• 1 AFSCME. Local 2059 (Bridgeville, Pa.)
• 1 Amalgamated Food Employees Union. Local 590 (Pittsburgh, Pa.)
• 1 American Postal Workers Union. Harrisburg Local
• 1 American Postal Workers Union. Philadelphia, PA Area Local
• 1 American Postal Workers Union. Philadelphia, PA Local AFL-CIO
• 1 Baltimore and Potomac Railroad
• 1 Camden and Atlantic Railroad Co
• 1 Communications Workers of America. Local 13000 (Philadelphia, Pa.)
• 1 Communications Workers of America. Local 13000 (Philadelpia, Pa.)
• 1 Federation of Telephone Workers of Pennsylvania
• 1 Hotel Employees & Restaurant Employees International Union. Local 274
• 1 International Association of Machinists and Aerospace Workers. Potomac Air Lodge 1976
• 1 International Union of Electrical, Radio and Machine Workers. Local 601 (East Pittsburgh, Pa.)
• 1 International Union of Electrical, Radio and Machine Workers. Local 617 (Sharon, Pa.)
• 1 Local 325 Canning & Pickle Workers Union
• 1 Local 325 Food Processors Union (Pittsburgh, Pa.)
• 1 Mayville State Hospital (Pa.)
• 1 National Association of Letter Carriers (U.S.). Branch 157 (Philadelphia, Pa.)
• 1 National Association of Letter Carriers (U.S.). Branch 451 (Johnstown, Pa.)
• 1 Northern Central Railway Company
• 1 Pennsylvania Postal Workers Union

• 7 Pittsburgh
• 5 Philadelphia
• 3 Harrisburg
• 2 New Jersey
• 2 Philadelphia Metropolitan Area
• 2 United States
• 1 Coatesville
• 1 Delaware
• 1 East Pittsburgh
• 1 Johnstown
• 1 Kingston
• 1 Latrobe
• 1 Northeastern States
• 1 Sharon

• 2 Statistics

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