Wishart, John Typescript and manuscript. Contains letter from 1927 with algebra by Wishart and Pearson; and correspondence between Wishart and the Galton Laboratory (includes three carbon copy replies from the laboratory) about purchasing copies of issues of <i>Tracts for Computers</i> and <i>Logarithemetica Brittanica</i>, and dispute over the laboratory's decision to increase the price of the publications to domestic and foreign subscribers following the fall in value of sterling. 2 Dec 1927