Which American screen and stage actor, who appeared in "Casablanca" also appeared in the 1951 British-American adventure film "The African Queen"? 
The African Queen (film):  The film stars Humphrey Bogart (who won the Academy Award for Best Actor – his only Oscar), and Katharine Hepburn with Robert Morley, Peter Bull, Walter Gotell, Richard Marner and Theodore Bikel. Humphrey Bogart: Humphrey DeForest Bogart ( ; December 25, 1899January 14, 1957) was an American screen and stage actor whose performances in 1940s films noir such as "The Maltese Falcon", "Casablanca", and "The Big Sleep" earned him status as a cultural icon.
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