- Four-page letter from Lysander Spooner in Boston [Massachusetts] to "Gerrit Smith, Lewis Tappan, William Goodell and others" dated March 12, 1856, explaining the reasons that Spooner has not joined the Liberty Party. At end, an additional note addressed to Gerrit Smith, requesting that he read the letter and then forward it on to Goodell if he thinks it proper., New-York Historical Society
- Manuscript draft of a four-page letter from Lysander Spooner in Boston [Massachusetts], dated March 12, 1856, to "Gerrit Smith, Lewis Tappan, William Goodell and others" dated March 12, 1856, explaining the reasons that Spooner has not joined the Liberty Party. At end, an additional note addressed to Gerrit Smith, requesting that he read the letter and then forward it on to Goodell if he thinks it proper., New-York Historical Society