- Manuscript copy in Lysander Spooner's hand of a four-page letter dated April 12, 1845, from Thomas Earle in Philadelphia [Pennsylvania] to G. [George] Bradburn, in which he gives lengthy critique of Lysander Spooner's book [probably The Unconstitutionality of Slavery] and the abolitionist movement in general.
- Four-page letter from Gerrit Smith of Peterboro [New York] to Lysander Spooner in Athol, Massachusetts, dated April 27, 1847, responding to Spooner's request for funds to support him during a visit to Boston as he writes his newest book. Includes list of names from whom Smith has collected funds, including S. E. Sewall, E. G. Loring, and H. B. Stanton.
- Document on one leaf in three hands. On top, a contract signed by Dudley Saltonstall promising to "carry to North American for sale" a "negroe girl named Mimba." On bottom, a reciept for the sale of the slave Mimba dated June 4, 1763. On back, verification of sums received by Dudley Saltonstall. Signed by John Joy of New London [Connecticut] and dated October 13, 1763.