1903 Mont. Laws 49, § 3
Section 3. If any person shall go into an church or religions assembly, any school room or other place where persons are assembled for amusement or for educational or scientific purposes, or into any circus, show, or public exhibition of any kind, or into a ball room, social party, or social gathering, or to any election precinct or any place of registration, on the day or days of any election or registration, where any portion of the people of the State are collected to register or vote at any election, or to any other place where people may be assembled to perform any public duty, or at any public assembly, and shall have or carry concealed or partially concealed about his person a pistol or other firearm, dirk, dagger, slung shot, sword cane, knuckles, or bowie knife, he shall. be punished by a fine of not less than fifty nor more than five hundred dollars.