On the letter that Teddy pulls from his sister's desk drawer, it has the city and state listed as Bristol CT, with the Zip Code of 31637. That Zip Code is actually for Lenox, GA. The correct Zip Code for Bristol, CT would be 06010.
Teddy is killed in a large house fire, which would have burned his remains down to just ashes that would be unrecoverable, yet at the end of the film, his parents are seen at his grave, implying that there was a body buried.
At the end of the movie the brother Joey's tombstone shows his birth date as August 28, 1976 and date of death as September 27, 1880.