Only original recording left of 1st steps on Moon to be auctioned

Art dealer Sotheby's in New York is auctioning three tapes identified as the "only surviving" original recording of the first Moon landing in 1969. The tapes include the first man to step on Moon, Neil Armstrong's famous line, "That's one small step for man, one giant leap for mankind." They have been viewed only thrice since June 1976, Sotheby's revealed.