From the Robin Catalogue:
A. MS., notebook, G-1903-2a, pp. 1-22.
Published, in part, as 1.15-26 (pp. 2-21). Gamma graphs, the third part of existential graphs, rendered intelligible by CSP’s categories of Firstness, Secondness, Thirdness. And without the gamma graphs, multitude, infinity, and continuity are not easily explained. The peculiarity of gamma graphs is that they make abstractions (mere possibilities) and laws the subjects of discourse.