http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a new handbook for ready reference on subjects commonly omitted from cyclopaedias; comprising personal sobriquets, familiar phrases, popular appellations, geographical nicknames, literary pseudonyms, mythological characters, red-letter days, political slang, contractions and abbreviations, technical terms, foreign words and phrases, Americanisms, etc