- 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.
- Portage bill for the Brig Othello, listing crew names, wages, and term of employment on a passage to the coast of Africa. Notes four men, George Harvey, Michael Keable, John Chace, and Ezekiel Mitchell [Mitchel] that "left the vessel at Virginia." On back, additional detail about wage payments to crew members.
- Unsigned letter with no addressee regarding charges from Captain [Thomas] Rogers [possibly on the Brig Othello] for wood, canoe hire, corn, and water. The author writes that, "if you possibly can imagine this to be a reasonable charge, pray allow it to him - but it is more than double we were ever charg'd by those that brought off twice the number of slaves."