remember the blueprints by memory. Professor Bullfinch also tells Dr. Grimes and Danny that he will not recreate ISIT until the world is ready for it. Real-world influence The Central Intelligence Agency's Directorate of Science & Technology developed a dragonfly-like flying machine with a listening device in the 1970s but said in 2003 that the device was "never deployed operationally". However, unconfirmed reports of field uses of this technology by agencies unknown have been made in recent years. According to journalist Clive Thompson, this Danny Dunn book predicted the rise of personal drones, "including the weird, fun, and creepy ways they’ll change society". Editions McGraw-Hill (Paperback, 1974, illustrated by Paul Sagsoorian) (Hardback, 1974, illustrated by Paul Sagsoorian) MacDonald and Jane's (Hardback, 1974, illustrated by Anne Mieke) Pocket Books/Archway Books (Paperback, 1975, #2 in their series, illustrated by Paul Sagsoorian) (Paperback, 1983 reissue, illustrated by Paul Sagsoorian) See also Insectothopter FlyTech Dragonfly Micromechanical Flying Insect References Danny Dunn 1974 American novels 1974 children's books 1974 science fiction novels Fiction about invisibility McGraw-Hill books