The Municipal Code of St. Louis (St. Louis: Woodward 1901), p.738, ch. 18, art. 2, § 1471

Abstract

it shall not be lawful for any person to wear under his clothes, or concealed about his person, any pistol or revolver, colt, billy, slung shot, cross knuckles, or knuckles of lead, brass or other metal, bowie knife, razor, dirk knife, dirk, dagger, or any knife resembling a bowie knife or any other dangerous or deadly weapon, within the City of St. Louis, without written permission from the mayor