55 STAT.] 77TH CONG. , IST SESS.-CH. 258 -JUNE 28, 1941 preparation of monographs on census subjects and other work of spe- cialized character which cannot be accomplished through ordinary em- ployment; per diem compensation of employees of the Department of Commerce and other departments and independent establishments of the Government who may be detailed for field work; expenses of attendance at meetings concerned with the collection of statistics, when incurred on the written authority of the Secretary of Commerce; pur- chase of books of reference, periodicals, maps, newspapers, manu- scripts, first-aid outfits for use in the buildings occupied by employees of the census; maintenance, operation, and repair of a passenger-car- rying automobile to be used on official business; construction, purchase, exchange, or rental of punching, tabulating, sorting, and other labor- saving machines, including technical, mechanical, and other services in connection therewith; printing and binding, traveling expenses, street- car fares, and all other contingent expenses in the District of Columbia and in the field, including the obligations chargeable against the appro- priation for this purpose for the fiscal year 1941, $6,800,000, together with the unexpended balance of the appropriation under this head for the fiscal year 1941, of which sum $1,000,000 shall be available immediately. Salaries and expenses, Social Security Act: For salaries and neces- sary expenses for searching census records and supplying information incident to carrying out the provisions of the Social Security Act, approved August 14, 1935 (42 U. S. C. ch. 7), including personal serv- ices in the District of Columbia; binding records; supplies; services; $110,000: Provided, That the procedure hereunder for the furnishing from census records of evidence for the establishment of age of individ- uals shall be pursuant to regulations approved jointly by the Secretary of Commerce and the Social Security Board. OFFICE OF ADMINISTRATOR OF CIVIL AERONAUTICS General Administration, Office of the Administrator: For all neces- sary expenses of the Office of Administrator of Civil Aeronautics in carrying out the provisions of the Civil Aeronautics Act of 1938 (52 Stat. 973), as amended, including personal services in the District of Columbia and elsewhere; contract stenographic reporting services; fees and mileage of witnesses; expenses of examination of estimates of appropriations in the field; purchase (including exchange), opera- tion, maintenance, and repair of aircraft; hire, maintenance, repair, and operation of passenger-carrying automobiles; $990,000. Maintenance and operation of air-navigation facilities: For all necessary expenses of operation and maintenance of air-navigation facilities, including personal services in the District of Columbia and elsewhere; purchase, including exchange (not to exceed $90.000), operation, maintenance, repair, and overhaul of aircraft; purchase, operation, maintenance, repair, and overhaul of aircraft power plants, propellers, instruments, equipment, and spare parts therefor; pur- chase and exchange (not to exceed $13,550), hire, maintenance, repair, and operation of passenger-carrying automobiles; purchase of special wearing apparel and equipment for aviation purposes (including snowshoes and skis); salaries and traveling expenses of employees detailed by the Administrator to attend courses of training conducted by the Government or industries serving aviation; and not to exceed 3 cents per mile for travel, in their personally owned automobiles within the limits of their official posts of duty, of employees engaged in the maintenance and operation of remotely controlled air-navigation facilities; $14,400,000. 279 Tabulating, etc. , machines. 54 Stat. 194 . Post, p. 832 . 49 Stat. 620. Proviso. Joint approval ol regulations. 49U..o.. 401- 682. Post, p. 684. Aircraft, automo- biles, etc. Post,p. 684. Training courses.
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