Slave trade--Rhode Island--Newport; Slave trade--Africa, West; Slave trade--Saint Vincent and the Grenadines; Rum industry; Sugar trade; Coffee industry; Cocoa trade; Slaves--Virginia; Slave trade--Virginia; Slavery--Virginia; Slave trade--Puerto...
Letter to Capt. John Duncan in Newport [Rhode Island] giving command to set sail to the coast of Africa [probably from William and Samuel Vernon]. Copied in Duncan's hand and signed in receipt.
Letter from John Duncan in Fredericksburg [Virginia] to William and Samuel Vernon of Newport, Rhode Island. Followed by two additional letters from Duncan to the Vernons dated April 30 and May 1, 1771.
