Ray’s higher arithmetic : the principles of arithmetic analyzed and practically applied, for advanced students / by Joseph Ray ; edited by Chas. E. Matthews, 660 - Chandler Collection no. 21, Volume: Archives Chandler Collection no. 21. Clarion University Archives.

Ray’s higher arithmetic : the principles of arithmetic analyzed and practically applied, for advanced students / by Joseph Ray ; edited by Chas. E. Matthews, 660 - Chandler Collection no. 21, Volume: Archives Chandler Collection no. 21. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/1001 Accessed December 23, 2025.