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.
silver | Silver Star | Horace Silver | Silver Spring, Maryland | Silver Lake | Silver | Silver Spring | The Silver Chair | Silver Jews | Sheldon Silver | Silver Lake Partners | Silver Jubilee | Pokémon Gold and Silver | Silver City | Silver City, New Mexico | Silver Surfer | Silver Linings Playbook | Rolls-Royce Silver Ghost | Queen Elizabeth II Silver Jubilee Medal | ''Pokémon Gold'' and ''Silver'' | Silver-haired bat | Silver Creek | Silver Convention | Silver Bauhinia Star | Nate Silver | Joel Silver | Burton Silver | Silver-washed Fritillary | Silver Lake, Los Angeles | Silver Jubilee of Elizabeth II |