; and purchase of services for restoration and repair of works of art for the National Gallery of Art by contracts made, without advertising, with individuals, firms, or organizations at such rates or prices and under such terms and conditions as the Gallery may deem proper, $144,202,000, to remain available until September 30, 2020, of which not to exceed $3,620,000 for the special exhibition program shall remain available until expended. Repair, restoration and renovation of buildings For necessary expenses of repair, restoration and renovation of buildings, grounds and facilities owned or occupied by the National Gallery of Art, by contract or otherwise, for operating lease agreements of no more than 10 years, with no extensions or renewals beyond the 10 years, that address space needs created by the ongoing renovations in the Master Facilities Plan, as authorized, $23,000,000, to remain available until expended: Provided , That contracts awarded for environmental systems, protection systems, and exterior repair or renovation of buildings of the National Gallery of Art may be negotiated with selected contractors and awarded on the basis of contractor qualifications as well as price. John F. kennedy center for the performing arts Operations and maintenance For necessary expenses for the operation, maintenance and security of the John F. Kennedy Center for the Performing Arts, $24,490,000. Capital repair and restoration For necessary expenses for capital repair and restoration of the existing features of the building and site of the John F. Kennedy Center for the Performing Arts, $16,800,000, to remain available until expended. Woodrow wilson international center for scholars Salaries and expenses For expenses necessary in carrying out the provisions of the Woodrow Wilson Memorial Act of 1968 (82 Stat. 1356) including hire of passenger vehicles and services as authorized by 5 U.S.C. 3109, $12,000,000, to remain available until September 30, 2020. National Foundation on the Arts and the Humanities National