Sign Talk: A Universal Signal Code, Without Apparatus, for Use in the Army, the Navy, Camping, Hunting, and Daily Life

Published in 1918, 'Sign Talk' by Ernest Thompson Seton is a comprehensive guide to a universal signal code based on gesture communication, particularly influenced by the sign language of the Cheyenne Indians. This practical manual features a vocabulary of approximately 1,725 signs, complete with illustrations and translations in French and German. Seton's work serves both as an ethnographic account and a tool for bridging communication gaps in various contexts, including military, camping, and daily life, while preserving the heritage of Native American sign language.