Narrator (voice)
Self - Radio Announcer
Self - Historian
Self - Biographer of David Sarnoff
Self - Writer
Self - Historian
Self - Engineer
Self - Niece of Edwin H. Armstrong
Self - Engineer
Self - Writer
Self - Radio Broadcaster
Self - Engineer
Self - Friend of Edwin H. Armstrong
Self - Engineer
Self - Predicts Demise of Radio (archive footage)
Self - Sings (archive sound)
Hamlet (archive sound)
Self - Finest Hour Speech (archive sound)
Self - Prepares for Amos 'n' Andy Broadcast (archive footage)
Self - Objects to Quality of Radio Programming (archive footage)
Self - Host of 'This Is Your Life' (archive footage)
Self - Announces Landing in Normandy (archive footage)
Self (with Lee De Forest) (archive footage)
Self - Prepares for Amos 'n' Andy Broadcast (archive footage)
Self - Visits Sarnoff at RCA (archive footage)
Self - with Lee De Forest (archive footage)
Self - Eulogizes Sarnoff (archive footage)
Self - Makes Broadcast About Banking Reform (archive footage)
Self - with Marconi at RCA (archive footage)
Self - Serenades Sarnoff (archive footage)
Self - Conducts NBC Symphony (archive footage)
Self - Announces Bombing of Hiroshima (archive sound)
Self - This is Your Life Announcer (archive footage)
Self - Professor in War of the Worlds Broadcast (archive sound)