| International Brotherhood Boilermakers Campaign Assistance Fund
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| International Brotherhood of Boilermakers Campaign Assistance Fund (Federal)
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| International Brotherhood of Electrical Workers
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| International Brothers Electrical Workers
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| International Interior Design Association (Corporation)
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| International Longshoremen
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| International Longshoremen # 815 (Unregistered)
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| International Longshoremen #815
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| International Paper PAC Federal
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| International Paper/Ft James/Ft Howard
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| International Union of Operating Engineer Local 15 (Unregistered: Illinois)
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| International Union of Operating Engineers (Corporation)
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| International Union of Painters & Allied Trades (Federal)
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| Intl Assn of Bridge, Structural & Ornamental Iron Workers (Federal)
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| Intl Assn of Fire Fighters 400
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| Intl Federation Professional & Technical Engineers (Federal)
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| Intl Operating Engineers 150
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| Intl Union of Elevator Constructors (Unregistered)
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| Invacare Corp (INVA PAC)
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| Invenergy (Corporation)
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