Mark Ash, The New York City Consolidation Act, as in Force in 1891: With Notes Indicating the Statutory Sources, References to Judicial Decisions, and All Laws Relating to New York City, Passed Since January 1, 1882, Together with an Appendix of the Royal English Colonial Charters of New York City Page 209, Image 233 (Vol. 1, 1891) available at The Making of Modern Law: Primary Sources.
Ordinances of the City of New York, § 455. No person shall manufacture, have, keep, sell, or give away any gunpowder, blasting powder, gun-cotton, niro-glycerine, dualin, or any explosive oils or compounds, within the corporate limits of the city of New York, except in the quantities limited, in the manner, and upon the conditions herein provided, and under such regulations as the board of fire commissioners shall prescribe : and said board shall make suitable provision for the storage and safe keeping of gunpowder and other dangerous and explosive compounds or articles enumerated under this title, beyond the interior line of low water-mark in the city and county of New York. The said board may issue licenses to persons desiring to sell gunpowder or any of the articles mentioned under this section at retail, at a particular place in said city to be named in said license (provided that the same shall not be in a building used in any part thereof as a dwelling unless specially authorized by said license), and persons so licensed may on their premises, if actually kept for sale, persons so licensed may have on their premises, if actually kept for sale, a quantity not exceeding at any one time, of nitro-glycerine, five pounds; of gun-cotton, five pounds of gunpowder, fourteen pounds; blasting powder, twenty-five pounds. . .