Fil:U.S. Copyright Office circular 03.pdfDescriptionU.S. Copyright Office circular 03.pdf English: Circular from the U.S. Copyright Office. For an overview, see U.S. Copyright Office circulars. Date September
Fil:U.S. Copyright Office circular 61.pdfDescriptionU.S. Copyright Office circular 61.pdf English: Circular from the U.S. Copyright Office. For an overview, see U.S. Copyright Office circulars. Date between
Fil:U.S. Copyright Office circular 66.pdfDescriptionU.S. Copyright Office circular 66.pdf English: Circular from the U.S. Copyright Office. For an overview, see U.S. Copyright Office circulars. Date between