Michael Kane
— Narrator (voice)
John Grierson
— Self (archive footage)
Norman McLaren
— Self (archive footage)
Sydney Newman
— Self
Basil Wright
— Self
Lorne Greene
— Self
Woodrow Wilson
— Self (archive footage)
Roberto Rossellini
— Self
Joseph McCarthy
— Self (archive footage)
Joris Ivens
— Self
Indira Gandhi
— Self
Margaret Grierson
— Self
Alberto Cavalcanti
— Self
Bosley Crowther
— Self
Pierre Juneau
— Self
Lester B. Pearson
— Self (archive footage)