Peirce C.S.
On the logic of drawing history from ancient documents especially from testimonies" (1901), Collected Papers v. 7, paragraph 219.
"PAP" ["Prolegomena to an Apology for Pragmatism"], MS 293 c. 1906, New Elements of Mathematics v. 4, pp. 319-320.
A Letter to F. A. Woods (1913), Collected Papers v. 8, paragraphs 385-388. [1]
