All proceeds (except so much thereof as may be otherwise obligated, credited, or paid under authority of those provisions of law set forth in section
572
(a) or
574
(a)–(c) of title 40 or the Independent Offices Appropriation Act, 1963 (
76 Stat. 725) or in any later appropriation Act) hereafter received from any disposal of surplus real property and related personal property under the Federal Property and Administrative Services Act of 1949, as amended, notwithstanding any provision of law that such proceeds shall be credited to miscellaneous receipts of the Treasury. Nothing in this part shall affect existing laws or regulations concerning disposal of real or personal surplus property to schools, hospitals, and States and their political subdivisions.