[Code of Federal Regulations] [Title 48, Volume 7] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 48CFR3016.603] [Page 80] TITLE 48--FEDERAL ACQUISITION REGULATIONS SYSTEM CHAPTER 30--DEPARTMENT OF HOMELAND SECURITY, HOMELAND SECURITY ACQUISITION REGULATION (HSAR) PART 3016_TYPES OF CONTRACTS--Table of Contents Subpart 3016.6_Time-and-Materials, Labor-Hour, and Letter Contracts Sec. 3016.603 Letter contracts.