V-1 flying bomb | Royal Flying Corps | flying boat | Monty Python's Flying Circus | flying ace | The Flying Nun | Flying Tigers | The Flying Burrito Brothers | Flying Dutchman | Boeing B-17 Flying Fortress | unidentified flying object | Flying Fish Cove | Flying ace | Central Flying School | The Flying Doctors | Royal Flying Doctor Service of Australia | Filoil Flying V Arena | flying saucer | Unidentified flying object | Those Magnificent Men in their Flying Machines | The Daring Young Man on the Flying Trapeze | Noel Gallagher's High Flying Birds (album) | Flying Tiger Line | Flying Squad | Flying Other Brothers | flying buttress | 306th Flying Training Group | The Flying Luttenbachers | The Flying Doctor | Ted Scott Flying Stories |
As an art director, Leven contributed to The Flying Deuces (1939), Hello Frisco, Hello (1943), Invaders from Mars (1953), The Silver Chalice (1954), and Jonathan Livingston Seagull (1973), among others.