The kind of vehicle Joshua Rey drives is a 1958 Plymouth Fury, just like in Stephen King's novel Christine, which Joshua Rey mentions while talking to Stevie, the young Stephen King in the episode.
This is the first episode to take place over the course of a single day.
During scenes in Joshua's office, one of the show's Emmy statues can be seen in the background.
The new style "Tetris block" style handlink makes its first appearance here. This style handlink would appear again in Miss Deep South - June 7, 1958 (1990) and Black on White on Fire - August 11, 1965 (1990) before making its official introduction in The Great Spontini - May 9, 1974 (1990). There, Al uses the original "calculator" style handlink until he "kills" it while trying to coax more data out of it. He begins using the new style handlink about midway through. This would seem to indicate that The Great Spontini - May 9, 1974 (1990) was produced first and aired out of order.
1964 was the first year that Sam leaped into three times. He previously did so in Blind Faith - February 6, 1964 (1989) and Jimmy - October 14, 1964 (1989).