His collection of drawings and paintings form a 48-page book The Monster Engine.

Devries would project a childs drawing with an opaque projector, and then faithfully trace each line.

monster-engine20

monster-engine4

monster-engine16

monster-engine1

monster-engine2

monster-engine3

monster-engine6

monster-engine8

monster-engine9

monster-engine10

monster-engine11

monster-engine12

monster-engine13

monster-engine14

monster-engine15

monster-engine19

monster-engine21

monster-engine23