[Gutenberg 50938] • Sign Talk / A Universal Signal Code, Without Apparatus, for Use in the Army, the Navy, Camping, Hunting, and Daily Life

This extensively researched work by a noted naturalist relies largely on the signs and gestures used by Cheyenne Indians. It features an extensive, alphabetically arranged vocabulary of over 1,700 terms — with French and German equivalents — accompanied by 700 illustrations of how to make a specific gesture for each word.