U.S. life lines, Procurements of essential materials 1946 MAPS BOOK

Spiral bound, with 20+ sheets of illustrations, maps and charts and pictorial cover with title " U.S. Life lines OPNAV-03-P-115". Includes "Table of contents and forward by Vice Admiral, Showing world distribution of essential imported raw and strategic materials in the United States essential for industrial productivity, percentage of import by sea and land. Includes statistical table and notes.