Mention is made of the hotline telephone between Moscow and Washington, but this was installed in 1963, five years after Edward R. Murrow's speech and ten years after the bulk of the film. (Fidel Castro's revolution hadn't even occurred at the time the film is set).
The U.S. Air Force officers are shown wearing modern, brushed metal name tags. Air Force personnel did not wear name tags until the blue plastic ones were introduced in 1967. Also officers are not authorized silver chin straps on the service hat - only plain leather ones (even in 1954). These are used for ceremonial duties only.
In several of the scenes with telephone conversations the phones being used were models not introduced until years later and at least twice the handsets use the detachable cord with the RJ-11 plug which was introduced by Bell in the 1970s.
During Murrow's speech at the RNTDA Convention - the scene that bookends the film - the screen to his left reads: "A Salute to Edward R. Murrow - October 25, 1958". The script font used on the screen is Ballantines; this typeface was only designed 16 years later in 1974 (by Brendel Typestudio).
In the opening sequence two shots show a twin-lens reflex camera being handed about. A moment later, a group photo is taken, presumably with the same camera) and a flash frame indicates the camera had a flash, but it didn't.
In the middle of the film, when Wershba is with his wife in their house getting ready for work, he forgets his wedding ring and his wife has to remind him to take it, the top button of his shirt becomes buttoned and his tie is tied tighter by itself as he turns around to get his wedding ring. There wasn't enough time for him to button his shirt and tighten his tie.
Mr. Paley calls Murrow to offer front row seats to the Knickerbocker game just before See It Now goes on the air that night. While the New York Knickerbockers did have a game on March 9, 1954, the night of the broadcast, the game was played in Indianapolis, Indiana, not New York City.
It was originally thought by many viewers that the "CBS News" sign on the wall is set in Helvetica, a typeface which was first created in 1957, three years after the Joseph McCarthy broadcast. Subsequent investigation by typographers established that the typeface is actually correct and is Akzidenz Grotesk.