No person shall post or affix, or cause to be posted or affixed, any notice, poster, or other paper or device, calculated to attract the attention of the public, to any lamp post, public utility pole or shade tree, or upon any public structure or building, except as may be authorized or required by law.
('81 Code, § 94A.17) (Ord. passed 7-12-88)  Penalty, see § 136.99