Gordon A. J. Petersen

An amazing amount of information is packed into this tiny book. Brief explanations of many things (cattle brands, common scientific symbols, signals in sports for basketball and American football), but full details on braille symbology, the hand alphabet for American Sign Language, etc.

Published in 1942, this book also includes Flags of the Axis Nations, U. S. Army map symbols, and Funnel Markings of Important Steamship Lines--none of the Important Steamship Lines still exist.