No proprietorship, firm, partnership, joint venture, syndicate, business trust, company, corporation, including non-profit corporations, or labor union shall make a contribution to any candidate or committee (supporting or opposing any candidate) directly or indirectly, and no campaign treasurer (of any such committee) shall solicit or accept such contribution. (Ord. 6096-NS § 1, 1991: Ord. 4701-NS § 1 (part), 1974: Ord. 4700-NS § 605, 1974)