Inspired By MAGIC, INC.

(i) In the introduction to his collection, Operation Chaos, Poul Anderson writes that Robert Heinlein's Magic, Inc. is set in a world where magic not only works but also is treated matter-of-factly as a set of technologies but that Heinlein did not develop all the possibilities of this idea so Anderson himself developed some further possibilities in his Operation... series.

(ii) Anderson adds that Harry Turtledove has also presented a treatment of the same idea.

(iii) "The double-page spread on pages 12 and 13, by the way, is a direct steal from Robert Heinlein's novel Magic Incorporated."

-Neil Gaiman discussing The Sandman, issue 4, in Hy Bender, The Sandman Companion (London, 2000), 3, p. 35.

That double-page spread depicts a gathering of all the demons in Hell.

We keep finding Anderson-Gaiman parallels: two great imaginative writers in different media: verbal and visual-verbal.