Goofs for
The St. Valentine's Day Massacre (1967) More at IMDbPro »

• Errors in geography: The opening credits show the SMC Cartage Company situated on 2122 N Clark Street, with Clark Street ending at a T intersection about a block away. Clark Street is actually a through street running from south of the Loop to the northern city limits.
  
  
• Factual errors: The biographical narrative on Al Capone states he was born in Italy but raised in a Brooklyn slum. Capone was actually born in Brooklyn on January 17, 1899.
  
  
• Errors made by characters (possibly deliberate errors by the filmmakers): In the scene where Jack McGurn is showing the killers how to get to the Clark Street garage from the Wood street location, McGurn's spoken directions are correct but while he is saying "east on Webster" his finger is traveling north on Wood Street. Then while he is saying "south on Clark" his finger is traveling east on Webster.
  
  

• Crew or equipment visible: In the scene where the Gusenberg brothers pick up Aiello, a stage light is briefly visible reflected in the car's window as it drives off.
  
  
• Continuity: At the start of the movie when the woman is taking her clothes off the indoor clothes line, you can clearly hear 3 shotgun blasts. When the actual massacre is shown, there is only 1 double barreled shotgun in use and only 2 shots are fired.
  
  

• Factual errors: SPOILER: In the film, Al Capone kills Joe Aiello on a train in 1929. Joe Aiello was actually killed in a drive-by shooting in October 1930.
  
  

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