Charter of the City of New Haven Page 142-143, Image 241-242 (1881) available at The Making of Modern Law: Primary Sources.
Charter of the City of New Haven. Trade. § 18. No person shall sell to any child under the age of sixteen years, without the written consent of the parent or guardian of such child, any cartridge or fixed ammunition of which any fulminate is a component part, or any gun, pistol or other mechanical contrivance arranged for the explosion of cartridge, or of any fulminate.