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The American Geophysical Union (AGU), which was established in 1919 by the National Research Council and for more than 50 years operated as an unincorporated affiliate of the National Academy of Sciences, is now a nonprofit corporation chartered under the laws of the District of Columbia.
Association for Education in Journalism is a Columbia, SC-based company in the Non-Profit sector.
Association of Fundraising Professionals is a Arlington, VA-based company in the Non-Profit sector.
NBAA is a Washington, DC-based company in the Non-Profit sector.
International Association for Continuing Engineering Education is a Washington, DC-based company in the Non-Profit sector.