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Also includes a note from Thomson to Ledermann wishing him a happy Christmas and New Year.

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Thomson tells Ledermann how glad he would be if, on leaving the University of St Andrews, he would take Lawley's vacated post. He makes him aware of the disadvantages of the post, in particular that it relies on a fund and as such is not permanent, and that would be an unconventional route from which to apply for possible future mathematics lectureships. He also states Emmett's pleasure at the possibility of working with Ledermann.

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Thomson also thanks Ledermann for notes regarding proofs, and asks him if the date of his wedding is confirmed.

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Thomson also invites Ledermann and his family to stay with Lady Thomson and himself in Edinburgh, referring to his improved health. He also tells Ledermann that he wants his view on an article in Psychometrika by A Finn.

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Thomson informs Ledermann he will be speaking about their work on Factorial Analysis at a meeting of the Royal Society [of Edinburgh]. He asks Ledermann if he will also take part, along with Lawley.

Thomson stresses that, although the lectures are to be delivered to scientists, the scientific audience come from varied backgrounds, and as such the lectures should be easily understood.

Scope and Contents From the Fonds:

The collection largely consists of letters from Godfrey Thomson to Ledermann. Many are highly mathematical in content, containing formulae and mathematical notation, though they also regard social events and contain enquiries from Thomson with regards to the safety of Ledermann's family throughout the war.

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Thomson remarks on a paper of Ledermann, highlighting corrections, and advises him with regards to slides for his Royal Society [of Edinburgh] lecture mentioned in his previous letter.

Also includes two sets of typescript notes titled Positive Structure in Factorial Analysis and Geometrical Illustrations of Factors and Correlations, most likely relating to the aforementioned lecture.

Scope and Contents The letter most likely refers to Y Ahmavaara's 1954 article, Transformation analysis of factorial data and other new analytical methods of differential psychology with their application to Thurstone's basic studies, from Annales Academiae Scientiarum Fennicae. In the letter, Thomson asks Ledermann to check if he is correct in his interpretation of the paper, referring to a chapter on m.v. selection in...

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Thomson tells Ledermann how glad he is that he will be attending the meeting, since he wants to discuss some difficulties he is having with Burt's work, particularly his reciprocity of tests and persons. He outlines these difficulties with several pages of explanatory working.

Written on the back of several copies of the preliminary notice for the twelfth International Congress of Psychology.

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Thomson thanks Ledermann for his letter, most likely wishing him a happy seventieth birthday; refers to a song he used to sing to an elderly Strasburg professor; and reflects on an evening he spent with Ledermann ten years previously.

Thomson also passes on his best wishes for Ledermann's trip to Israel, and suggests times when they can meet in Manchester the following May.