An official statement of the economic, engineering and international problems that are involved in the proposed opening of the Great Lakes-St. Lawrence Ship Channel which will unite the commerce of the Great Lakes with that of the Atlantic. I-The mid-continent is marooned. II-Land and ocean freight rates compared. III-What increased freight costs mean. IV. Our world trade handicap. V-Our Panama Canal handicap. VI-What cutting transportation costs means. VII-Cheaper roads to world markets. VIII-Why our New York outlet satisfies New York. IX-The St. Lawrence Ship Channel. X-What New York offers as a substitute. XI-How the job can be done. XII-A look forward. Rear lists available pamphlets and bulletins for distribution. Also lists the association executive committee and officers.