Previous comment: "Although the set is titled Radio Gum, movie stars grace the wrappers."


Below: valued notes from John Moran

Radio was composed of many Film Stars along with the regular only radio performers.

Howard Duff & others started out in radio and became film stars

Also, popular films were performed on Radio, using stars, such as
as Clark Gable, Wallace Beery, Ginger Rogers etc.

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Examples:
Alan Ladd did a one season series called Box 13,
about a reporter who answered calls for help.

Dick Powell was a Radio Detective.

Jack Benny, Bob Hope, Bing Crosby Radio shows ran for many years on Radio.
They had famous stars of those days appear on their shows.

A few programs: Lux Radio Theater, Screen Guild Playhouse, Director's Playhouse etc..

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The Sound Effects & Voices created the "Pictures in your mind,"

Today, TV shows you the pictures.