prescribe such regulations as he deems necessary;

receive money and other property donated, bequeathed, or devised, without condition or restriction other than that it be for the purposes of the Center and to use, sell, or otherwise dispose of such property for the purpose of carrying out its functions, without reference to Federal property disposal statutes;

in the discretion of the Board of Trustees, receive (and use, sell, or otherwise dispose of, in accordance with clause (2)) money and other property donated, bequeathed, or devised to the Center with a condition or restriction, including a condition that the Center use other funds of the Center for the purpose of the gift;

appoint and fix the compensation of such personnel as may be necessary to carry out the provisions of this subchapter in accordance with the provisions of chapter 51 and subchapter III of chapter 53 of title 5 relating to classification and General Schedule pay rates, except that the Librarian of Congress may appoint and fix the compensation of a reasonable number of personnel without regard to the provisions of chapter 51 and subchapter III of chapter 53 of title 5 relating to classification and General Schedule pay rates;

obtain the services of experts and consultants in accordance with the provisions of section 3109 of title 5;

accept and utilize the services of voluntary and noncompensated personnel and reimburse them for travel expenses, including per diem, as authorized by section 5703 of title 5;

enter into contracts to carry out the provisions of this subchapter, and such contracts may, with the concurrence of two-thirds of the members of the Board, be entered into without performance or other bonds and in conformity with section 6101 of title 41; and

make advances, progress, and other payments which the Board deems necessary under this subchapter in conformity with the provisions of section 3324(a) and (b) of title 31.