[Paris]: Collège de 'Pataphysique, [1950s]. First Edition. Slim octavo (24cm.); original bluish-green pictorial card wrappers printed in dark blue; 30,pp.; illus. throughout. Wrappers a bit cockled and toned along extremities, some general shelf wear including short closed tear to top edge of upper cover not approaching text or image, rear cover rather soiled, faint dampspot to textblock fore-edge; still, About Very Good and sound. Remnants of the original yellow belly-band laid in. Pataphysical dissertation on the possible construction of a time travel machine.