Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 1-31.
The first and third parts of an introduction to the alpha and beta parts of the system of existential graphs; MS. 456 is...
Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 1-26.
Improvement in reasoning requires, first of all, a study of deduction. For this, an unambiguous and simple system of...
A. MS., n.p., [c.1903?], pp. 1-2; 1-5, incomplete, with an alternative p. 5.
The pure mathematics of existential graphs, alpha and beta parts, with definitions and permissions of...
From the Robin Catalogue:
A. MS., notebook, G-1903-2a, October 12, 1903, pp. 68-126; A1-A8.
Published, in part, as 1.521-544 (pp. 68-126, with only the first and last paragraphs...