John Prentiss Poe, The Baltimore City Code, Containing the Public Local Laws of Maryland Relating to the City of Baltimore, and the Ordinances of the Mayor and City Council, in Force on the First Day of November, 1891, with a Supplement, Containing the Public Local Laws Relating to the City of Baltimore, Passed at the Session of 1892 of the General Assembly, and also the Ordinances of the Mayor and City Council, Passed at the Session of 1891-1892, and of 1892-1893, up to the Summer Recess of 1893 Page 297-298, Image 306-307 (1893) available at The Making of Modern Law: Primary Sources.

Ordinances of Baltimore, § 742A. Every person in said city of Baltimore not being a conservator of the peace, entitled or required to carry such weapons as a part of his official equipment, who shall wear or carry any pistol, dirk-knife, bowie-knife, sling-shot, billy, sand-club, metal knuckles, razor or any other dangerous or deadly weapon of any kind whatsoever, (pen knives excepted.) concealed upon or about his person; and every person who shall carry or wear such weapons openly, with the intent or purpose of injuring any person, shall, upon a conviction thereof, be fined not more than five hundred dollars, and be imprisoned not more than six months in jail or in the house of correction; that this act shall not release or discharge any person or persons already offending against the general law in such cases made and provided, but any such person or persons may be proceeded against, prosecuted and punished under the general law of this State as if this act had not been passed.