Permissions have been received from the publishers to quote from the following works:
The Collected Papers of Charles Sanders Peirce, vols. I–VI, eds. Charles Hartshorne and Paul Weiss (Cambridge: The Belknap Press of Harvard University, 1931–1935); vols. VII, VIII, ed. Arthur Burks (Cambridge: Harvard University Press, 1958). References to these Collected Papers will be by volume and paragraph number following the established convention. Thus (5.585) is to be interpreted to mean Volume V, Paragraph 585.
The Peirce Papers in the Houghton Library of Harvard University, the Philosophy Department of Harvard University.
Charles S. Peirce’s Letters to Lady Welby, ed. I. C. Lieb (New Haven: Whitlock’s, 1953).
In full the author’s article, “Peirce’s Analysis of Normative Science,” Transactions of the Charles S. Peirce Society, II, 1, pp. 5–32 (as Part I, Chapter 2).
In full the author’s article, “Pragmatism and the Normative Sciences,” Journal of the History of Philosophy, V, 1 (January 1967), pp. 41–53 (as Part I, Chapter 3).