One-page letter dated December 18, 1855, from William Goodell in New York, to Lysander Spooner in Boston [Massachusetts], giving his approval of Spooner's "form of a letter to be forwarded to Congress, with the form of petition."
Manuscript copy of a four-page letter from Gerrit Smith of Peterboro [New York] to Hon. D. [David] Wilmot, in which he responds to a letter from Wilmot discussing slavery and the United States Constitution, and sends him a copy of Lysander Spooner's "the Unconstitutionality of Slavery."
One-page letter and envelope dated September 23, 1866, from Hez L. [Hezekiah Lord] Hosmer in Virginia City to Lysander Spooner [probably in Boston, Massachusetts] written on the back of a circular titled "Chief Justice H. L. Hosmer's Charge to the Grand Jury."
Manuscript draft of an eight-page letter from Lysander Spooner in Worcester [Massachusetts] to Gerrit Smith, dated July 5, 1849, describing his analysis of the United States Constitution in regards to slavery.
Two-page letter from Gerrit Smith of Peterboro [New York] to Lysander Spooner in Boston, Massachusetts, dated November 12, 1847, in which Smith pledges funds to support Spooner as he writes his newest book and discusses an anti-slavery convention in Buffalo [New York].
Two-page letter from Gerrit Smith of Peterboro [New York] to Lysander Spooner in Boston, Massachusetts, dated December 4, 1847, regarding copies of Spooner's petition to Congress that Smith has forwarded on to Elizur Wright.
Two-page letter from John A. Reed in Mount Vernon, Ohio, to Lysander Spooner dated July 2, 1851, asking Spooner to send the names and P.O. addresses of "those members of your Legislature who voted for Hon. Chas. [Charles] Sumner [?]."