Opera Comic -- See Opera Here are entered general works about opera. Musical compositions in this form are entered under the heading Operas. --subdivision In opera under names of individual persons, under names of individual deities, mythological and legendary figures, and fictitious characters, and under names of countries, cities, etc., for works on those persons and places in opera.
Opera Costume -- See Costume Here are entered works on clothing treated as an artistic object, as well as works on clothing created for the stage, screen, or special events. Works on the utilitarian aspects of clothing, including works on how to dress, are entered under Clothing and dress. --subdivision Clothing under names of individual persons and under classes of persons and ethnic groups; and individual articles of apparel