In 1956 he moved to Canada and began working for United Press International.
[1] Madsen wrote on topics such as cross country truck drivers and the CBS news magazine "60 minutes".
[2] Biographies included Billy Wilder, Barbara Stanwyck, Coco Chanel, Greta Garbo, John Jacob Astor, Jacques Cousteau, Yves St. Laurent, André Malraux, Jean-Paul Sartre, Simone de Beauvoir, William C. Durant, William Wyler, and John Huston.
Partial list of books published: Madsen was married to Midori.
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