1) DC cultural agcy 2) DC-based culture sponsor 3) NTA, today 4) AFT rival 5) agency aiding opera, etc 6) Arts org 7) Arts organisation 8) Arts-funding org 9) Arts-funding organisation 10) Arts-supporting grp 11) Big lobby in DC 12) Big met supporter 13) Bill Ivey used to head it 14) Class-conscious group Found on https://www.crosswordclues.com/clue/nea