No person in a park shall:
1. Expose or offer for sale any article or thing, except under authority of a permit.
2. Announce, advertise, or call the public attention in any way to any article or service for sale or hire, or paste, glue, tack or otherwise post any sign, placard, advertisement or inscription whatever, nor shall any person erect or cause to erect any sign whatever on any public land or highways or roads adjacent to the park.