421. Every printer or manufacturer who furnishes any writing, object or advertising material relating to an election shall indicate therein or thereon his name and address and the name and title of the official agent or deputy, as the case may be, who caused it to be produced.
Every owner of a newspaper or other publication in which an advertisement is published shall indicate the name and title of the official agent or deputy, as the case may be, who caused it to be published.
Every radio or television broadcaster who broadcasts an advertisement shall indicate the name and title of the official agent or deputy, as the case may be, at the beginning or at the end of the advertisement.