- New-York Society for Promoting the Manumission of Slaves (1785-1849), commonly known as the New-York Manumission Society, was established to publicly promote the abolition of slavery and manumission of slaves in New York State. The society provided legal and financial assistance to manumitted slaves in need of protection, slaves seeking manumission and supported legislation and efforts to enforce laws banning the sale of slaves in New York State. The records include meeting minutes, commission reports, financial records, indentures, and registers from the year of its organization to its dissolution in 1849. Subjects covered include appointments, elections, political activities, finances, reports on individual cases, the sponsorship and operation of the African Free School and African American houses of refuge. Among its active members were: Robert C. Cornell, W. W. Woolsey, Nehemiah Allen, Melancton Smith, William T. Slocum, Samuel Bowne, Adrian Hegeman, Willet Seaman, Thomas Burling, John Jay, Alexander Hamilton, James Duane, John Murray, Jr., William Dunlap, Alexander McDougall, Noah Webster, and Egbert Benson.
- Petition letter [from the Massachusetts Anti-Slavery Society] asking the Senate and House of Representatives of the Commonwealth of Massachusetts to protest in United States Supreme Court against the wrongful imprisonment of "colored citizens" employed on trade ships arriving at the ports of slaveholding states.
- Account record for sales of slaves aboard the Ship Ascension at Mozambique by Samuel Chace on behalf of Messrs. Vernon Gardner & Co. [William Vernon and Caleb Gardner]. Includes purchases of blankets, medical expenses, and "landing" fees, as well as a sale of 33 slaves to Don Thomas Antonio Romero in Mozambique.