507

• http://www.unav.es/gep/Port/index.html

• digitalizzato

514

• http://www.jfsowa.com/peirce/ms514.htm

• trascritto con un corposo commento di John F. Sowa

517

• NEM 4

518

1896

• CP 3.425-455.

• This is the manuscript of the "The Regenerated Logic" (Monist, Vol. 7, pp. 19-40, 1896)

528

1880

• CP 3.154-251 except 154n1 and 200n*.

• Reprint of “On the Algebra of Logic” (American Journal of Mathematics, Vol. 3, 1880). Published in CP with an editor's marginal corrections and with the revisions of 1880, c.1882, and undated.

529

1870

• CP 3.45-149 except 45n*.

• Two reprints from Memoirs for the American Academy of Arts and Sciences titled: “Description of a Notation for the Logic of Relatives, resulting from an Amplification of the Conceptions of Boole's Calculus of Logic” (communicated January 26, 1870). Published in CP with revisions from CSP's own copy.

535

c.1880

• CP 4.12-20.

546

• NEM 2

567

1885

• CP 3.403A-403M.

576

• W2

584

1869

• W2

• CP (p) 1.28-29 (pp. 2-4), 1.30-34 (pp. 6-11).

585

• W2

586

• W2

587

• W2

589

1892

• CP (p) 4.187n1 (pp. 5-8).

• NEM 4

• This is presumably the third paper of The Open Court series of 1892 “The Critic of Arguments”, of which only the first two papers were published in The Open Court.

592

1867/ 1893

• CP 2.461-561

• This is the printed article of 1867, "On the Natural Classification of Arguments," together with photostats of the missing pages and with additions and corrections of 1893 intended as essay 1 for the book “A Search for a Method."

593

1868/ 1893

• CP 5.318-357

• This is the printed article of 1868, "Grounds of Validity of the Laws of Logic," along with the corrections corrections of 1893 intended as essay VI of "A Search for a Method."

594

• NEM 3

595

1893

• CP (p) 2.286-291 (pp. 6-13), 2.295-296 (pp. 14-16), 2.435-443 (pp. 23-29, with the omission of p. 25), 7.555-558 (pp. 29-32).

• Short Logic

596

1902

• CP (p) 5.538-545 (pp. 21-45)