In the first part of the movie when they get to Burketsville, and they are in the graveyard. She states something along the lines of that there were a lot deaths of the young children around the 1940's. Yet the gravestone that they show is one that says the infant died in 1907.
Ah. So no children whatsoever died in 1907? Of any cause? Please. I doubt the graveyard was entirely devoted to 40's child deaths only. (Correct me if I'm mistaken, I haven't really seen the movie myself, I'm just going by logic here. I mean, it'd cost less for the city to build and maintain one graveyard than it would for two.)
She was referring to the Rustin Parr killings of the '40s, I believe...and who says the headstone had to do with what Josh was shoting at the time??? The film is edited (as before mentioned in so many comments in previous "slip ups" before.)