Joseph Lippman, The Revised Ordinances of Salt Lake City, Utah, Embracing All Ordinances of a General Nature in Force December 20, 1892, Together with the Charter of Salt Lake City, the Amendments Thereto, and Territorial Laws of a General Nature Applicable to Salt Lake City, and the Constitution of the United States Page 284, Image 290 (1893), §§ 17-18 available at The Making of Modern Law: Primary Sources.

"[Ordinances of Salt Lake City,] Discharging Firearms, § 17. Any person discharging firearms within the limits of the city, without a lawful breastwork or battery for the protection of the citizens, shall be liable to a fine of not more than twenty-five dollars for every such offense. A breastwork or battery, for target shooting, to be deemed lawful, shall be a wall eighteen inches thick, six feet wide, and six feet high in the back, with side wings one foot thick, each extending two feet, increasing flaringly to the front, and six feet high, of adobes or mud, or its equivalent of other material.

[Ordinances of Salt Lake City,] Misdemeanors, Discharging Air Gun, Flipper, etc., § 18. Any person discharging an air gun, sparrow gun, flipper, or other similar contrivance, within the limits of this city, shall be liable to a fine of not more than twenty-five dollars for every such offense."