James O'Brien McMahon 1903-1952 U. S. Senator from Connecticut Block of Stamps

GLOGAU Ⓒ First Day of Issue JAMES O'BRIEN MCMAHON 1903 1952 U.S. SENATOR from CONNECTICUT Art FATHER OF UNITED STATES NATIONAL NUCLEAR POLICY JUL 284 NORW ATOMIC 9-AM 1962 CONN ENERGY PEACEFUL USES ACT PEACEFUL ATOMIC ENERGY ACT BRIEN MCMAHON FIRST DAY OF ISSUE ENERGY ACT ATOMIC USES ATOMIC BRIEN MCMAHON ENERGY ACT EACEFUL USES D2 PEACEFUL USES BRIEN MCMAHON BRIEN MCMAHON