He assisted in organizing the American Antislavery Society at Philadelphia.

The evidence

• “it ; besides several volumes on religious and ethical subjects, still in manuscript, lie assisted in organizing the American Antislavery Society, at Philadelphia, in December, 1833 ; the Liberty Party, at Albany, N. Y., in 1840; the American Missionary Association, at Albany, in 1846; the National Prohibition Party, in Chicago, in 1869 ; and participated in the re-union of Abolitionists at Chicago, in June, 1874 ; also, assisted in preparations for organizing a Wisconsin State Prohibition Party, at Ripon, in October, 1874.”

  1879-history-of-rock-county/11-rock-county-ch05-press-institutions-tragedy.md, PDF p. 422 / book p. 426

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources