LOGIC (MS 339-1009)
This manuscript is a rewritten version of one of CSP's contributions (Note A: "Extension of the Aristotelian Syllogistic") to Studies in Logic, By Members of the Johns Hopkins University (edited by C. S. Peirce), 1883. What was published (2.517-531) is the 1883 "note," as rewritten in 1893 for Chapter X of the Grand Logic. The difference between the two papers is not substantial.
Logic (modal see Modality), The "Grand Logic" ("How to Reason: A Critic of Arguments'), Studies in Logic (by Members of the Johns Hopkins University)
LOGIC / GRAND LOGIC 1893