Flexagons. As contained in Scientific American, volume 195, no. 6. Martin Gardner.

Flexagons. As contained in Scientific American, volume 195, no. 6

New York: Scientific American, Inc., December, 1956. 4to, pp. 191, [1]; very good in original pictorial wrappers. Signed in ballpoint by Martin Gardner on p. 162, the first page of his article. Item #58817

Price: $150.00

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