Iowa Code § 191.5: Advertising oleomargarine — restrictions.

No person, in person or by an agent, shall, by any means whatever, directly or indirectly, advertise or represent by statement, printing, writing, circular, poster, design, device, grade designation, advertisement, symbol, sound, or any combination thereof, that oleo, oleomargarine or margarine, or any brand of oleo, oleomargarine or margarine, is a dairy product for the purpose of inducing or which is likely to induce, directly or indirectly, the purchase for consumption of oleo, oleomargarine or margarine, or any brand thereof. Whoever shall violate this provision shall be deemed guilty of a simple misdemeanor.