United States Code, 2010 Edition
Title 2 - THE CONGRESS
CHAPTER 5 - LIBRARY OF CONGRESS
Sec. 168a - Printing of Constitution Annotated as Senate documents
From the U.S. Government Printing Office, www.gpo.gov
§168a. Printing of Constitution Annotated as Senate documents
All hardbound revised editions and all cumulative pocket-part supplements shall be printed as Senate documents.
(Pub. L. 91–589, §2, Dec. 24, 1970, 84 Stat. 1586.)