Coronet Instructional Films, which was known prior to 1945 as Coronet Productions, changed its name in the summer of 1972 to Coronet Instructional Materials and in September 1972 to Coronet Instructional Media. In May 1980 the name was changed to Coronet. Works by this body are found under the name used at the time of publication: Coronet Productions. Coronet Instructional Films. Coronet Instructional Materials (Firm) Coronet Instructional Media (Firm) Coronet (Firm) SUBJECT ENTRY: Work