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Jerry Lewis as Clayton Poole |
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Marilyn Maxwell as Carla Naples |
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Connie Stevens as Sandra Naples |
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Salvatore Baccaloni as Gigi 'Papa' Naples |
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Reginald Gardiner as Harold Hermann |
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Ida Moore as Miss Bessie |
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Gary Lewis as Young Clayton |
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Isobel Elsom as Mrs. Van Cleeve |
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James Gleason as Doc Simpkins |
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Hans Conried as Mr. Wright |
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Hope Emerson as Mrs. Rogers |
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Alex Gerry as Judge Jenkins |
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Mary Treen as Nurse |
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Judy Franklin as Young Carla |
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Will Wright as Fire Chief (uncredited) |
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Mary Foran as Miss Menefee (uncredited) |
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Dickie Humphreys as Dancer / Actor (uncredited) |
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Jack Benny as Carlos, the matador (uncredited) |
| Directing | Frank Tashlin | Director |
| Writing | Frank Tashlin | Screenplay |
| Writing | Frank Tashlin | Story |
| Costume & Make-Up | Sy Devore | Wardrobe Designer |
| Camera | Haskell B. Boggs | Director of Photography |
| Art | Hal Pereira | Art Direction |
| Art | Tambi Larsen | Art Direction |
| Crew | John P. Fulton | Special Effects |
| Art | Sam Comer | Set Decoration |
| Art | Robert R. Benton | Set Decoration |
| Crew | Rudy Makoul | Dialogue Coach |
| Directing | Charles C. Coleman | Assistant Director |
| Editing | Alma Macrorie | Editor |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Costume & Make-Up | Nellie Manley | Hair Supervisor |
| Sound | Gene Merritt | Sound Recordist |
| Sound | Charles Grenzbach | Sound Recordist |
| Sound | Walter Scharf | Original Music Composer |
| Costume & Make-Up | Edith Head | Costume Design |
| Production | Ernest D. Glucksman | Associate Producer |
| Production | Jerry Lewis | Producer |
| Crew | Nick Castle | Choreographer |
| Writing | Preston Sturges | Story |
| Production | Jack Mintz | Producer's Assistant |
