http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Institute of Arts and Letters (U.S.)
" ... slightly emended version of an address delivered before a combined meeting of the American Academy and the National Institute of Arts and Letters." on 27 May 1949.
Detached from: Harper's magazine, volume 199, number 1191, Aug. 1949.