[Code of Federal Regulations] [Title 31, Volume 3] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 31CFR601.4] [Page 921] TITLE 31--MONEY AND FINANCE: TREASURY CHAPTER VI--BUREAU OF ENGRAVING AND PRINTING, DEPARTMENT OF THE TREASURY PART 601_DISTINCTIVE PAPER FOR UNITED STATES CURRENCY AND OTHER SECURITIES --Table of Contents Sec. 601.4 Use of paper; interest-bearing securities of the United States. The existing distinctive papers shall be used for the printing of interest-bearing securities of the United States, and for any other printing where the use of distinctive paper is indicated.