Prescribing Regulations Governing the Exercise by the Federal 10242 Civil Defense Administrator of Certain Administrative Authority Granted by the Federal Civil Defense Act of 1950 Signed: May 8, 1951 Federal Register page and date: 16 FR 4267, May 9, 1951 Amended by: EO 10773, July 1, 1958; EO 11051, September 27, 1962; EO 12107, December 28, 1978 Revoked by: EO 12148, July 20, 1979 See: EO 11725, June 27, 1973