44 U.S.C. § 738: Binding of publications for distribution to libraries

The Director of the Government Publishing Office shall supply the Superintendent of Documents with sufficient copies of publications distributed in unbound form, to be bound and distributed to the State libraries and other designated depositories for their permanent files. Every publication of sufficient size on any one subject shall be bound separately and receive the title suggested by the subject of the volume, and the others shall be distributed in unbound form as soon as printed. The library edition, as well as all other bound sets of congressional numbered documents and reports, shall be arranged in volumes and bound in the manner directed by the Joint Committee on Printing.