The Armstrong Circle Theater (“UFO: Enigma of the Skies”) interview (CBS) was conducted on 22 January 1958 and the The Mike Wallace Interview(ABC) was conducted on 8 March 1958 (see the Wikipedia article).
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(Donald Keyhoe “The Mike Wallace Interview”)
Wikipedia article: “Donald Keyhoe”:
The late Major Donald Edward Keyhoe, U.S. Marine Corps,
NICAP Director, UFO Author & Researcher