Treatise on self knowledge : showing the nature and benefit of that important science, and the way to attain it: intermixed with various reflections and observations on human nature / by John Mason ; to which are added, questions adapted to the work; for the use of schools and academies, 660 - Chandler Collection no. 99, Volume: Archives Chandler Collection no. 99. Clarion University Archives.

Treatise on self knowledge : showing the nature and benefit of that important science, and the way to attain it: intermixed with various reflections and observations on human nature / by John Mason ; to which are added, questions adapted to the work; for the use of schools and academies, 660 - Chandler Collection no. 99, Volume: Archives Chandler Collection no. 99. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/1080 Accessed February 04, 2026.