- Manuscript copy of letter from Francis Mairez and David Cooper of Montego Bay, Jamaica, [to Samuel and William Vernon], sent via Captain George Sweet on the Brig Othello, regarding profits from slaves sold on the Vernon's behalf and other trade business. Followed by a second letter dated August 22, 1775, from Mairez and Cooper [to the Vernons] regarding their accounts current.
- Inventory of goods consigned to Captain George D. Sweet aboard the Brig Othello, owned by Samuel and William Vernon of Newport, Rhode Island, departing Rhode Island to the Coast of Africa. Includes instructions that read, "To insurance in London, from thence to Affrica [Africa] at and from thence to market with slaves at 8 guineas." On back, "Invoice of slops [?] sent on board," such as frocks, hats, shoes, and rum.
- Ship manifest of "negroes, mulattoes, and persons of color taken on" the Steamer Baltimore of Washington from the port of Alexandria. Includes names of ship's Master, John Rogers, shipper J. N. Stark, collector Edward S. Hough and four slaves, Jane Diggs, Richard Diggs, Betsy Sanders and Charles Sanders.