"Butterfly Six" is a fictional model name for the car. It is actually a 1923 Chevrolet Superior.
A stand-in was used for the closeup shot of Harold Lloyd's hands when he gets tangled in the curtain rings. Lloyd lost the thumb and index finger on his right hand in 1919 from an exploding prop accident.
According to a contemporary news article, the dog appearing in the film was named Jack. He was a deaf, cross-eyed stray that was rescued by a property person while this film was being made. Jack was nicknamed the Ben Turpin of dogdom.
When the soldier stops the car to retrieve his helmet, in the background, upper left of the frame, is 565 N. Cahuenga Blvd. - the Cunningham's house on Happy Days (1974).
The real-life name of the turkey in the film is Genevieve.