Among his more notable film appearances were tough flier Les Peters in "Only Angels Have Wings" (1939); George in "The Great McGinty" (1940); the caustic director in "No Time for Comedy" (1940); reporter Chic Clark in "My Sister Eileen" (1942); Albert Van Cleve, Don Ameche's cousin and snobbish rival for the affections of Gene Tierney in "Heaven Can Wait" (1943); an eccentric poet in "The Shocking Miss Pilgrim" ; "Dangerous Blondes" (1943); the wise sheriff in "Moonrise" (1948); and the cardshark disguised as a woman in "Titanic" (1953). In the sprightly B picture "It Shouldn't Happen to a Dog" (1946), Joslyn was cast in lead male role as Carole Landis's love interest.