William. M. Caswell, Revised Charter and Compiled Ordinances and Resolutions of the City of Los Angeles Page 85, Image 83 (1878) available at The Making of Modern Law: Primary Sources.

Ordinances of the City of Los Angeles, § 36. In future, no persons, except peace officers, and persons actually traveling, and immediately passing through Los Angeles city, shall wear or carry any dirk, pistol, sword in a cane, slung-shot, or other dangerous or deadly weapon, concealed or otherwise, within the corporate limits of said city, under a penalty of not more than one hundred dollars fine, and imprisonment at the discretion of the Mayor, not to exceed ten days. It is hereby made the duty of each police officer of this city, when any stranger shall come within said corporate limits wearing or carrying weapons, to, as soon as possible, give them information and warning of this ordinance; and in case they refuse or decline to obey such warning by depositing their weapons in a place of safety, to complain of them immediately.