Sources (with abbreviations)

CP (volume.paragraph) = Collected Papers of Charles Sanders Peirce, 8 volumes, vols. 1-6, eds. Charles Hartshorne and Paul Weiss, vols. 7-8, ed. Arthur W. Burks. Cambridge, Mass.: Harvard University Press, 1931-1958.

DPP x (volume) = Dictionary of Philosophy and Psychology. Volume I (1901). Volume II (1902). Edited by James Mark Baldwin. New York, London: The Macmillan Company, Macmillan And Co., Limited.

EP x:xxx (volume:page number) = The Essential Peirce. Selected Philosophical Writings. Vol. 1 (1867-1893), edited by Nathan Houser & Christian Kloesel, 1992, vol. 2 (1893-1913), edited by the Peirce Edition Project, 1998. Bloomington and Indianapolis: Indiana University Press.

HP x:xxx (volume:page number) = Historical Perspectives on Peirce's Logic of Science. A History of Science. 2 vols. Edited by Carolyn Eisele (1985). Berlin: Mouton Publishers.

MS xxx (number) = Peirce manuscripts
For information concerning these Manuscripts, see Commens: The Peirce Manuscripts

NEM x:xxx (volume:page number) = The New Elements of Mathematics, by Charles S. Peirce. Four volumes in five books. Edited by Carolyn Eisele (1976). The Hague: Mouton Publishers.

PPM xxx (page number) = Pragmatism as a Principle and Method of Right Thinking. The 1903 Harvard Lectures on Pragmatism. Edited by Patricia Ann Turrisi (1997). Albany: State University of New York Press.

RLT xxx (page number) = Reasoning and the Logic of Things. Edited by Kenneth Laine Ketner (1992). Cambridge: Harvard University Press.

SS xxx (page number) = Semiotic and Significs: The Correspondence Between Charles S. Peirce and Victoria Lady Welby. Ed. by Charles S. Hardwick & J. Cook (1977) Bloomington: Indiana University Press.

W x:xxx (volume:page number) = The Writings of Charles S. Peirce. 6 vols. to date. Vol. 1, edited by Max Fisch et at., vol. 2, edited by Edward C. Moore et al., vols. 3-5, edited by Christian Kloesel et al., vol. 6, edited by the Peirce Edition Project. Bloomington: Indiana University Press, 1980-2000.

For more detailed bibliographical information concerning these sources,
see Commens: Collections of Peirce's Writings