No person shall use the name of any department or officer of the City in the solicitation of funds for any private business or in the sale or offer for sale of advertising space or matter in any newspaper, magazine, book, periodical, pamphlet or any publication of any kind or character, or state to any other person from whom funds are being so solicited to whom such offer to sell or sale is made or to be made, either orally, in writing, or in printed matter, that such solicitation of such advertising medium bears the endorsement or approval of any department or officer of the City.