; (5) (A) compile and maintain a cumulative index of designations, reports, and statements filed under this Act, publish the index at regular intervals, and make the index available for purchase directly or by mail; (B) compile, maintain, and revise a separate cumulative index of reports and statements filed by multicandidate committees, including in such index a list of multicandidate committees; and (C) compile and maintain a list of multicandidate committees, which shall be revised and made available monthly; (6) prepare and publish periodically lists of authorized committees which fail to file reports as required by this Act; and (7) serve as a national clearinghouse for the compilation of information and review of procedures with respect to the administration of Federal elections. (b) Pseudonyms For purposes of subsection (a)(3), a political committee may submit 10 pseudonyms on each report filed in order to protect against the illegal use of names and addresses of contributors, but only if such committee attaches a list of such pseudonyms to the appropriate report. The Administration shall exclude these lists from the public record. (c) Contracts The Administration may enter into contracts for the purpose of performing the duties described in subsection (a). (d) Availability of Reports Reports or other information described in subsection (a) shall be available to the public, except that— (1) copies shall be made available without cost, upon request, to agencies and branches of the Federal Government