PUBLIC LAWS-CH. 506-AUG. 24, 1949 39 Stat. 355; 42 Stat. 217. 23 U. S. C., Supp. II., § 21 et seq. Depreciation on equipment. Warehouse mainte- nanee, etc. Medical supplies, etc., in emergencies. Inter-American Highway. Fulfillment of U. S. obligations. 46 Stat. 1697. 39 Stat. 355; 42 Stat. 217. 23 U. S. C., Supp. It, § 21. 23U.S.C. §60-63. 5. Stat. 839. 42 Stat. 215; 49 Stat. 1520. for other purposes", as amended and supplemented (23 U. S . C . 1-117), none of the money appropriated for the work of the Public Roads Administration during the current fiscal year shall be paid to any State on account of any project on which convict labor shall be employed, except this provision shall not apply to convict labor per- formed by convicts on parole or probation: Provided, That during the current fiscal year, whenever performing authorized engineering or other services in connection with the survey, construction, and main- tenance, or improvement of roads for other Government agencies, cooperating foreign countries and State cooperating agencies the charge for such services may include depreciation on engineering and road-building equipment used, and the amounts received on account of such charges shall be credited to the appropriation concerned: Pro- vided further, That during the current fiscal year the appropriations for the work of the Public Roads Administration shall be available for meeting the expenses of warehouse maintenance and the procure- ment, care, and handling of supplies, materials, and equipment stored therein for distribution to projects under the supervision of the Public Roads Administration, and for sale and for distribution to other Gov- ernment activities, cooperating foreign countries and State cooperat- ing agencies, the cost of such supplies and materials or the value of such equipment (including the cost of transportation and handling) to be reimbursed to appropriations current at the time additional sup- plies, materials, or equipment are procured, from the appropriation chargeable with the cost or value of such supplies, materials, or equip- ment: Provided further, That the appropriations available to the Public Roads Administration may be used in emergency for medical supplies and services and other assistance necessary for the immediate relief of employees engaged on hazardous work under that Administration. For all necessary expenses to enable the President to utilize the serv- ices of the Public Roads Administration in fulfilling the obligations of the United States under the Convention on the Pan-American High- way Between the United States and Other American Republics, signed at Buenos Aires, December 23, 1936, and proclaimed September 16, 1937 (51 Stat. 152), for the continuation of cooperation with several governments, members of the Pan American Union, in connection with the survey and construction of the Inter-American Highway as pro- vided in public resolution, approved March 4, 1929 (Public Resolu- tion 104), as amended or supplemenlted, and for performing engineer- ing service in pan-American countries for and upon the request of any agency or governmental corporation of the United States, $100,000 to be derived from the administrative funds provided under the Act of July 11, 1916, as amended or supplemented (23 U. S . C . 21), or as otherwise provided. Federal-aid postwar highways: For carrying out the provisions of the Federal-Aid Highway Act of 1944 (58 Stat. 838), $385,000,000, together with $1,509,000 of the unobligated balance of funds hereto- fore appropriated for access roads, to be immediately available and to remain available until expended, which sum is composed of $150,000.000, the remainder of the amount authorized to be appro- priated for the second postwar fiscal year by section 2 of said Act, and $236,509,000, a part of the amount authorized to be appropriated for the third postwar year by said section 2. Forest highways: For expenses necessary for carrying out the provisions of section 23 of the Federal Highway Act of November 9, 1921, as amended (23 U. S . C . 23, 23a), in accordance with section 3a of the Federal-Aid Highway Act of 1948 (Public Law 834, approved 642 [63 STAT.
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