Vol. 30 Del. Laws 55, 55-56 (1919)
Section 222. It shall be unlawful for any person or persons, or a member of any firm, or the agents or officers of any corporation to sell to a minor or any intoxicated person, any revolver, pistol, or revolver or pistol cartridges, stiletto, steel or brass knuckles, or other deadly weapons made for the defense of one's person.
It shall be the duty of any person or persons, firm, company or corporation desiring to engage in the business aforesaid, to keep and maintain in his place of business at all times a book which shall be furnished him by the Clerk of the Peace of the County wherein he does business, in which said book lie shall enter the date of the sale, the name and address of the person purchasing any such deadly weapon, the number and kind of deadly weapon so purchased, the color of the person so purchasing the same, and the apparent age of the purchaser, and the names and addresses of at least two freeholders resident in the County wherein the sale is made, who shall positively identify the purchaser before the sale can be made; Provided, that no clerk, employee or other person associated with the seller shall act as one of the identifying freeholders. This book shall at all times be open for inspection by any Judge, Justice of the Peace, Police Officer, Constable, or other Peace Officer of this State.