Page:Compendium of US Copyright Office Practices, II (1984).pdf/577

 1900-18

. The Copyright Office will certify a copy of material deposited in connection with a claim to copyright or a mask work only if such material has remained continuously under the control of the Copyright Office. Copies of such materials made part of the Library of Congress' collections will only be certified by the Photoduplication Service or the Motion Picture, Broadcast, and Recorded Sound Division. When such deposit materials are loaned for exhibit purposes to the Library of Congress Exhibits Office, the Copyright Office asks that these items be returned, and the Office insists that they not be altered in any way and that they not be available for public handling. In these cases the material is considered to have remained under the control of the Office and therefore can

[1998]