From the Robin Catalogue:
A. MS., notebook, G-1903-2a, begun October 8, 1903, pp. 1-64, 68.
Published in two places: 1.324 and 1.343-349 (pp. 30-34 and 36-64 respectively). Note that part of 1.349 comes from page 68 of MS. 465, with p. 68 of that manuscript continuing p. 64 of this one. Omitted is a discussion of existential graphs, especially alpha and beta possibilities (pp. 1-30) and a discussion of the category of Firstness (pp. 34-36).