Solomon Kendrick, who had returned with Gray, quickly joined another venture and left Boston for the Pacific Northwest on "Jefferson", under captain Josiah Roberts. Joseph Ingraham did likewise, obtaining command of the sloop and leaving Boston on September 17, 1790. The "Columbia" left Boston on October 2, 1790, with Gray as captain and Haswell as first mate. Joseph Barrell placed John Hoskins on board as supercargo. Barrell gave Hoskins broad authority in the management of cargo and instructed Gray to consult with him on all matters of trade.