, Class 511.65 4, Box 2470, Foreign Service Despatch -Usia Ibs/NY Shortwave Versus Production for Rai, p.1953
, 3 nara, rg 59 cdf, 511.65 4, Box 2470, Oii/Ibd Department Instruction n° 64, 28 febbraio 1950, Aldo D'Alessandro to the Officer in Charge of the American Mission, Rome. 4 nara, rg 59 cdf, Class 511.65, Box 2470, Foreign Service Despatch -Voa's Radio University Programs, vol.29, 1944.
, Oii/Ibd Department Instruction n° 64
,