UFO News Article:
“CUT SOUND ON TV PROGRAM”,
23 January 1958 (Gettysburg Times, Pennsylvania)

CBS cut off the sound during a UFO TV debate on 22 January 1958:

http://news.google.com/newspapers?id=C08mAAAAIBAJ&sjid=df8FAAAAIBAJ&pg=4974,2225261

Quote from the article:
“The sound was cut off on a CBS television program last night when author Donald E. Keyhoe, a former Marine Corps major, began to digress from the script in speaking of flying saucers.

A network employe explained that nobody knew what he was going to say.

Keyhoe was silenced for about 15 seconds during ‘The Armstrong Circle Theater’ presentation of a documentary on flying objects.

He had just said: ‘We are meeting in secret with a congressional committee. If these meetings were public it would be proved,’ when the sound was cut.”

Other U.S. newspapers also reported on this TV incident:

“AUTHOR DIGRESSES ON TV, SOUND IS CUT”, 23 January 1958 (The New York Times)

http://select.nytimes.com/gst/abstract.html?res=F70717FB395D1A7B93C1AB178AD85F4C8585F9

“KEYHOE AIRS REMARKS; Author Completes Statement Cut Off on TV Show” 24 January (The New York Times)

http://select.nytimes.com/gst/abstract.html?res=F10B14FF345E107B93C6AB178AD85F4C8585F9

“Flying Saucer Comment Cut Off TV Show”, 23 January 1958
(Los Angeles Times, California)

http://pqasb.pqarchiver.com/latimes/access/441266992.html?dids=441266992:441266992&FMT=ABS&FMTS=ABS:AI&type=historic&date=Jan+23%2C+1958&author=&pub=Los+Angeles+Times&desc=Flying+Saucer+Comment+Cut+Off+TV+Show&pqatl=google

“Saucer Fans Left Up In Air”, 23 January 1958
(The Miami News, Florida)

http://news.google.com/newspapers?id=5bwyAAAAIBAJ&sjid=JewFAAAAIBAJ&pg=612,3201035

“Sound Is Cut From Program On Saucers”, 22 January 1958
(Park City Daily News, Bowling Green, Kentucky)

http://news.google.com/newspapers?id=IwwdAAAAIBAJ&sjid=-ZYEAAAAIBAJ&pg=2975,1453538

The late Major Donald Edward Keyhoe, U.S. Marine Corps,

NICAP Director, UFO Author & Researcher
(youtube.com image)