Details for NBC Closed Circuit
| Episode Name | Episode # | Air Date | Notes |
|---|---|---|---|
| NBC Closed Circuit | 1950-08-08 | Not for broadcast. Talks by the executive vice president of network promotion and advertising and the advertising and promotion manager of NBC. The start of the, "Three Chimes Mean Good Times on NBC" campaign. George Hicks describes NBC's audible trademark. The first fifteen minutes of the program only. | |
| NBC Closed Circuit | 1952-11-26 | Not for broadcast. Programming requests for clearances, read at dictation speed. |