When Coogan (Clint Eastwood) is searching the New York City nightclub, the large screen plays a scene from Tarantula (1955), a "B" science fiction movie which was Eastwood's fourth movie.
This movie was the inspiration for the television series McCloud (1970) starring Dennis Weaver. Herman Miller had written the story for this movie and then later changed a few details to create McCloud.
The helipad shown in the movie closed in 1968, the release date for the movie. However, it reopened in 1973, but closed permanently following a helicopter roll-over crash which killed several people on the roof top and a woman on the street below.
According to screenwriter Dean Riesner, who held script meetings after-hours with Clint Eastwood in his hotel, "I'd leave his suite, and I'd be going down the hall, and there'd be some girl coming down the hall from the opposite direction and heading into Clint's room." Added Riesner, "There were always a bunch of girls around him, I'll tell you that. Gals from the office, gals around the set, gals in the picture."
(At around 27 mins) The record changer shown briefly in Julie Roth's (Susan Clark) apartment is very rare. It is a General Electric Vacu-Magic model circa 1962. It was manufactured exclusively for GE by the V-M Corporation and used one of their very common model 1200 series mechanisms. These changers were only provided on high-end model consoles. There is a small vacuum hose that runs through the tone arm that allegedly picks up dust near where the needle makes contact with the record. A part of the white hose from the rear of the tone arm that leads underneath the surface on which the record changer is mounted can be seen. It was mostly a useless gimmick. If there was a piece of dust large enough actually to get sucked up by the mechanism, then the owner was seriously neglecting the proper care of their records in the first place. The gold-colored metal slotted opening on the front edge of the console's cabinet was part of the Vacu-Magic package. It provided a holder for twelve-inch records that allegedly allowed the owner to remove and replace the album cover without having to touch the surface of the record.