Municipal Register of the City of Lawrence. 1870 Page 185, Image 185 (1870) available at The Making of Modern Law: Primary Sources.

[Ordinances of Lawrence,] Concerning Fires, § 4. The city council may order that no gunpowder shall be kept within the city, except in tight casks or canisters; that not more than fifty pounds thereof shall be kept in any building within twenty-five rods of any other building, or if within ten rods, then not more than twenty-five pounds; nor more than one pound in any place, unless in copper, tin or brass canisters holding not more than five pounds each, and closely covered.