Anachronisms: There is a three prong electrical outlet visible in the Wershba's bathroom. It was not in common use until decades later.
Incorrectly regarded as goofs: 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.
Anachronisms: 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.
Anachronisms: Mention is made of the hotline telephone between Moscow and Washington, but this was installed in 1963, five years after 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).
Anachronisms: There is a plastic water bottle on the desk in the newsroom when Friendly, Wershba, and Murrow are standing around and talking.
Anachronisms: The piano shown behind jazz singer Dianne Reeves displays the "Steinway" logo on the side - it would not have been displayed on the side of models at that time.
Factual errors: 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.
Continuity: Murrow's cigarette grows longer (while the ash gets shorter) during the meeting where Paley reschedules his show to Sundays.
Revealing mistakes: During the opening scene, there are a few paragraphs that set up and explain the movie's premise. In the first paragraph it says that this all took place during the "1950's and 1960's". This is a grammatical mistake. It should be "1950s and 1960s" since it's plural, not possessive.
Factual errors: Murrow is shown giving his famous speech at the RNTDA Convention. The screen to his left shows the date as 25 October 1958 whereas the actual date of the speech was 15 October 1958.