The exercises, puzzles, and mental challenges in this book illustrate specific kinds of visual thinking that then can be synthesized by students into problem-solving strategies, including ambidextrous thinking, seeing by drawing, pattern-seeking, analytical seeing, and visual recall.
Robert McKim predates ALL the writers and Proponents of the Visual Thinking Concept, making him the "grand daddy" of it all in a certain respect. It's this book I've taken into Boeing and it's this information that I look to when I'm trying to get to the core of what being a visualizer is all about.
This book is one of the earliest clear descriptions describing how to "do" visual thinking, thus serves as one of my key sources in my personal promotion of the "visualizer" concept in the technical arena where I work.