There shall be printed and furnished to the Library of Congress for official use in the District of Columbia not to exceed twenty-five copies of:

House documents and reports, bound;

Senate documents and reports, bound;

Senate and House journals, bound;

public bills and resolutions;

the United States Code and supplements, bound; and

all other publications and maps which are printed, or otherwise reproduced, under authority of law, upon the requisition of a Congressional committee, executive department, bureau, independent office, establishment, commission, or officer of the Government.

Confidential matter, blank forms, and circular letters not of a public character shall be excepted.

In addition, there shall be delivered as printed to the Library of Congress:

ten copies of each House document and report, unbound;

ten copies of each Senate document and report, unbound; and

ten copies of each private bill and resolution and fifty copies of the laws in slip form.