Lewis's original estimate of kettle requirements, based on the assumption the expeditionary force would number just fifteen men, included "6 Copper kettles (1 of 5 Gallons, 1 of 3, 2 of 2, & 2 of 1)." On May 19, 1803, he actually purchased fourteen brass kettles from Benjamin Harberson & Sons, coppersmiths, at 75 High Street in Philadelphia. He also ordered eight brass kettles as presents for Indians, and evidently bought an additional six as part of the camp equipage for a larger company of men.1
1. Donald Jackson, ed., Letters of the Lewis and Clark Expedition with Related Documents (2nd ed., 2 vols., Urbana: University of Illinois Press, 1978), 1:70, 85, 94, 95, 98.