When Mulder is looking through the phone book, his finger rests on the listing for the New Jersey State Parks office. The listing includes a phone number to call for park hours, with a note stating "Thru Labour Day Only." American English drops the "u" from words like "labor."
When Mulder and Scully first walk across the office to acquire a car, the cameraman walks into the edge of a desk and the camera noticeably jolts to the left. A second later the offending desk is in shot.