Contrary to the publisher's claim, this is not ""completely new"" but a revised, updated version of the 1956 original with a few vestigial offerings (how many girls have a hope chest?). Atomic submarines have replaced destroyers, golf balls are discussed instead of baseballs, and modern electronics (radar, sonar, Fathometers, laser beams), the Early Bird satellite, nose cones and atomic reactors are included. Excluded are the names of the specific companies referred to--which will make it difficult for youngsters who want additional information or hope for a visit. ""You can be sure"" the chatty style remains along with the pro-New England point of view, and if the emphasis is on material products (to the exclusion of other forms of work), they are at least adequately photographed in this edition.