Their lives, too, are scarcely recorded, though Mr Nicolson reconstructs a few of them to marvellous effect.
Stung by Woolf's condescending tone, and unpersuaded by her argument, Nicolson wrote again, criticising Fry and the Bloomsbury Group in yet stronger terms.
Council leader Gordon Nicolson re-pledged the authority's commitment to the scheme and said he was pleased with the progress of projects.
Prof Nicolson co-authored the research with Dr Angela Fawcett, and the intervention was planned and monitored by Dr Rea reason of Manchester University.
Elizabeth "Betty" Brown, 56, from Edinburgh, was last seen alive on 28 May 2010 on a bus on Nicolson Street in the city.
This time Woolf took his comments personally and drafted a lengthy, rebarbative reply, in which she turned Nicolson's attack on Fry and herself back on him.
Ch Sup Ruaraidh Nicolson, of Strathclyde Police, said he hoped Friday's operation to question pedestrians and motorists would help generate fresh information for the investigation.
In 1992, in the course of a libel trial, Mr Nicolson was obliged to admit publicly that he, too, had lied to the Yugoslavs about their fate.
This was a small-scale study, but Prof Nicolson says the results are on a par with those achieved by the large-scale reading recovery scheme in the early 1990s.
But Mr Nicolson felt sure his mother had meant the papers to be published, and that the story of his parents' marriage would be an inspiration to others.
Before leaving the warmth of the Seamen's Victoria Hall on Harbour Road, rangers John Orr and Mairi Nicolson warned that the miserable summer appears to have impacted on bat numbers.
BBC: NEWS | UK | Scotland | Highlands and Islands | Seeking 'a wet slap' in the dark
Publishers Weidenfeld and Nicolson say that her memoir will tell what happened on the day she was shot "and the inspiring story of her determination not be intimidated by extremists".
BBC: Pakistani schoolgirl Malala Yousafzai to publish a book
The biggest difference, Prof Nicolson says, is that when the class is broken down into ability groups within the literacy hour each day, the teacher has to move from one to another.
Prof Nicolson believes the policy implications are that great things can be achieved by early identification of a problem, followed by short-term intervention for the majority of those having difficulties - leaving longer term help only for those who may have dyslexia.
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