I haven't seen this yet on any lists, but come 2051, '61, '71, it will be generating lots of discussion! The following quote is from a trailer for a BBC Radio 4 programme: "In Part One of Losing the Past, Richard Hollingham investigates specific examples of what is now unplayable or unreadable. For example, he can reveal for the first time, that the UK population census data from 1951 are lost, as are significant parts of the 1961 and 1971 census data." http://www.bbc.co.uk/radio4/history/losing_the_past.shtml I'll be 104 in 2051, so can't imagine that I'll be contributing! Best wishes Ron Dunning