Thomas, A. C. 1. (1897). The attitude of the Society of Friends toward slavery in the seventeenth and eighteenth centuries: Particularly in relation to its own members. [S.I.]: Knickerbocker Press.

Thomas, Allen C. 1846-1920. The Attitude of the Society of Friends Toward Slavery in the Seventeenth and Eighteenth Centuries: Particularly in Relation to Its Own Members. [S.I.]: Knickerbocker Press, 1897.

Thomas, Allen C. 1846-1920. The Attitude of the Society of Friends Toward Slavery in the Seventeenth and Eighteenth Centuries: Particularly in Relation to Its Own Members. [S.I.]: Knickerbocker Press, 1897.