For what period of time did Keith Richards drop the 's' from his last name thus calling himself 'Keith Richard'?

crotalus77

Wikipedia is the only place I could find a reference to Keith Richard. It was listed as an alias, but nothing on why or when. http://en.wikipedia.org/wiki/Keith_Richards Jul 28 07, 12:26 PM

zbeckabee

Mid-1960's to 1981. "It is sometimes erroneously cited that this estrangement led Richards to drop the "s" from his surname from the mid-1960s to 1981. Nevertheless, the idea was originally proposed by Andrew Loog Oldham, the first manager of the Stones. He advised Richards to drop the "s" as it would resemble the name of Cliff Richard, one of Britain's greatest stars at that time. Keith did reintroduce the "s" to his surname after he reconciled with his father in 1982." http://tags.lyricsfreak.com/Keith+Richards/ Jul 28 07, 3:13 PM