Roughly 5 1/2" x 8 1/4" and somewhat cool. Published in 1943 by General Motors and distributed not only to their own employees who were busy at just such a craft, but to anybody who wrote and asked for one. Typical of wartime publications letting people know what the new cars and appliances they were not getting were translating into on the war front. All the basics of engines and propulsion units, superchargers and everything. VG with mild aging or wear. Minor writing on the first page, by some prior dealers of all people.