- Two-page letter [possibly a manuscript draft] dated March 23, 1860, from Lysander Spooner in Boston [Massachusetts] to Hon. Charles B. Sedgwick, indicating that he would like to give an interview or paper on his opinions regarding a lawsuit "against the three" [including Royal Phelps] by the Vigilance Committee., New-York Historical Society
- Manuscript copy of four documents on one sheet in the hand of Lysander Spooner. On recto, a manuscript copy of judicial records from the State of New York Supreme Court case between Gerrit Smith and Royal Phelps dated April 17, 1860, stating that the case be "set aside, on the ground that this Court has no jurisdiction of the said action." Followed by three letters dated April 17 through April 24, 1860 between Lysander Spooner and Chas. [Charles] D. Miller, discussing the Court's decision., New-York Historical Society
- Two letters of introduction from Chas. [Charles] D. Miller, both dated October 10, 1860. One-page letter to Lysander Spooner, introducing E.W. Dodger of Peterboro, New York and one-page letter with envelope introducing Lysander Spooner to E. W. Dodger, mentioning a libel suit by Gerrit Smith., New-York Historical Society