Thompson, Alexander John Manuscript. On interpolation tables; enclosing data from the Registrar General on annual births and deaths in 1920 and 1921, including deaths of children in age brackets from new born to five years old; his work on part 8 of the <i>Logarithmetica Britannica</i>; detailing criticism of his tables; on proposed table of antilogarithms; encloses an example of two series of antilogs; thanks K Pearson for his offer to help Thompson with admission to an MSc degree; reassuring Pearson over his intentions with regard a second edition [of the Everett table?]; on compiling <i>Logarithmetica Brittanica</i> part 10; on Pearson's plan to resign from UCL; and on royalties. 1920-1934