Charles M. Parkin, Jr. as he is described in the book:
Rocket expert, U.S. Army Engineer, Research and Development Laboratories, Fort Belvoir, Virginia; Founder of Youth Science Corps; President, American Rocket Society, Washington D.C. chapter.
In the later chapters of the book, he describes a small rocket which utilizes a sugar based propellant. I've often thought that it would be fun to build that rocket exactly to the specification in the book and then actually fly it.
Maybe I will do that some day...