Proposed rule, National Archives and Records Administration (NARA), Federal Register, November 3, 2004:
“As part of NARA’s Records Management Initiatives to redesign Federal records management, NARA has determined that Federal agencies should be allowed to dispose of short-term temporary electronic mail (e-mail) record (e.g., those with a retention period of 90, 120, or 180 days), without requiring the creation of a separate paper or electronic recordkeeping copy.”
Related resource: A Report to the Interagency Committee on Government Information: Recommendations for the Effective Management of Government Information on the Internet and Other Electronic Records, by the Electronic Records Policy Working Group, October 20, 2004 (25 pages, PDF).