[6] The financing of war factories, and particularly of those which had to make large and expensive plant additions before manufacturing could proceed, was effectively aided by the War Credits Board of the War Department. In the autumn of 1917 Congress authorized the War Department to advance to contractors amounts up to 30 per cent of the total contract obligations. The War Credits Board administered this work. In all, it lent to war department contractors about $250,000,000. On June 1, 1921, it had recouped all but $14,500,000 of these loans. Its total losses were not expected to run over $150,000, while the profits (interest, of which $8,000,000 had been collected) were estimated at $12,000,000. [7] The A. E. F. importations include all American-made guns shipped to France, these same guns also being included among the 6,663 units noted as built in the United States. [8] This and other special artillery plants since sold to private buyers are regarded as military assets. In the event of another great war they would undoubtedly be used once more for the work their walls encompassed in 1918. [9] Includes surplus for sale. [10] Sufficient to equip engineer troops with army of 825,000 men. [11] _Chemical Warfare._ By Fries and West; the McGraw-Hill Company. [12] Abridged from the discussion in _Chemical Warfare_. By Fries and West; the McGraw-Hill Company. [13] Under the contract France and England must at any time lease this or some other cross-Channel cable to the United States upon the request of this country. [14] The French Government later converted the plant into a railroad car repair shop. [15] This sum was much more than offset in our favor by the decline in sterling exchange during the time bills were unpaid. [16] Due to the slump in business and prices in 1921, this estimate is probably too high. INDEX Aberdeen Proving Ground, 176 Abuse of Uniform, 109–110 Agriculture, Department of: Army supplies transferred to, 43, 275–276 Army surplus nitrate sold by, 274 Aircraft: Production, 199–203 Storage, 208 Aircraft Board, 204 Aircraft Industrial Demobilization, 204–207 Airplane Engines: Returned by A. E. F., 210 Sale of surplus, 280 War production, 202–203, 206 Airplane Lumber, 280 Airplane Lumber Claim, 293–294 Airplanes: Burning of unserviceable, 211–213 Contracts, 199 Production, 202, 206 Returned by A. E. F., 210–211 Sale of surplus, 280 Air Service: Demobilization of, 50, 133, 204, 207, 280–281 Air Service Claims Board, 204 Air Service of A. E. F.: Demobilization, 210–213 Maintenance cost, 203 Allies: Business settlement with, 287–288, 313–314 Allotments, 71–72 Amatol Arsenal, 188 American Brake Shoe & Foundry Co.: Builders of Erie Howitzer Plant, 171 American Car & Foundry Co.: Claim of, 156 Post-armistice production by, 179