See Royce, Josiah, and Kernan, W. Fergus (1916), "Charles Sanders Peirce", The Journal of Philosophy, Psychology, and Scientific Method v. 13, pp. 701–09. ArisbeEprint
helsinki.fi
Memorandum to the President of Charles S. Peirce Society by Ahti-Veikko Pietarinen, U. of Helsinki, March 29, 2012. Eprint.
iupui.edu
Houser, Nathan (1989), "Introduction", Writings of Charles S. Peirce, 4:xxxviii, find "Eighty-nine".