CFR›Title 26›Chapter I›Part 601›26 CFR Part 601 Subpart I Citation26 CFR Part 601 Subpart IContainsSection § 601.901CorpusDaily eCFRDisplayed edition2026-08-05Last updated2026-08-05 Subpart I—Use of Penalty Mail in the Location and Recovery of Missing Children Sections § 601.901 § 601.901 Missing children shown on penalty mail. Authority5 U.S.C. 301 and 552. Subpart I also issued under 39 U.S.C. 3220.SourceT.D. 8848, 64 FR 69398, Dec. 13, 1999, unless otherwise noted.