- Draft of a six-page letter dated December 7, 1846, in the hand of Lysander Spooner in Winchendon, Massachusetts, addressed to [George] Bradburn, discussing various news of the abolitionist movement, opinions on articles and letters written by Edmund Quincy, Wendell Phillips [and others] and the affections of Elizabeth Sargeant., New-York Historical Society
- Four-page letter dated December 7, 1846, from Lysander Spooner in Winchendon, Massachusetts, to George Bradburn in Cleveland, Ohio, discussing various news of the abolitionist movement, opinions on articles and letters written by Edmund Quincy, Wendell Phillips [and others] and the affections of Elizabeth Sargeant., New-York Historical Society
- Four-page letter dated March 5, 1847, from L. [Lysander] Spooner in Winchendon [Massachusetts] to George Bradburn in Cleveland, Ohio, expressing his frustration at the actions of several prominent abolitionists, including William Lloyd Garrison and Gerrit Smith. Includes manuscript copy of an article published in the Liberator, which mentions George Bradburn., New-York Historical Society