Jack Parker, their former coach and a twin himself, said sometimes he had to check Mike's right ear to tell the twins apart because Mike had a freckle there that Mark didn't have.

CNN: Brother of 9/11 victim speaks out after five years

The Parker cellar lies just below the kitchen floor and is accessed by a door decorated with a charming photo of the young Parkers: Pat Parker looked like a double for Natalie Wood, while Mr. Parker looked like Jack Nicholson in his prime.

WSJ: Drinking With Robert M. Parker Jr. | On Wine