Ephemeral materials such as flyers, program books, daily newsletters, or newspapers that are distributed at conferences. For published records of conferences, including abstracts, reports, and the papers presented, see Conference papers and proceedings.
Congress of Industrial Organizations (U.S.) http://id.loc.gov/rwo/agents/n80081625 -- See Also AFL-CIO
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Congress of Industrial Organizations (U.S.). Insurance and Allied Workers Organizing Committee -- See Also the later heading Insurance Workers of America