Conway, John, "Polyhedra of positive genus", geometry.research Usenet group; see messages dated "Sep 23, 1997, 12:00:00 AM" announcing the toroidal deltahedron, and "Sep 25, 1997, 12:00:00 AM" describing its construction. Unlike the § Stewart toroids, it has coplanar adjacent triangles, but otherwise resembles a toroidal deltahedron with more faces described by Stewart (1980), p. 60.