[Code of Federal Regulations] [Title 14, Volume 5] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR1221.111] [Page 177] TITLE 14--AERONAUTICS AND SPACE CHAPTER V--NATIONAL AERONAUTICS AND SPACE ADMINISTRATION PART 1221_THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL Subpart 1221.1_NASA Seal, NASA Insignia, NASA Logotype, NASA Program Identifiers, NASA Flags, and the Agency's Unified Visual Communications System Sec. 1221.111 Use of the NASA Logotype. The NASA Logotype has been retired and is used only in an authentic historical context, and only with prior written approval of the NASA Administrator.