Over 250 boxes
Correspondence and papers of Karl Pearson (1857-1936), Goldsmid Professor of applied Mathematics & Mechanics, UCL 1884-1911, Galton Professor of Eugenics 1911-1933. The collection also includes papers of Walter Frank Raphael Weldon (1860-1906), Jodrell Professor of Zoology & Comparative Anatomy, UCL 1890-1899.
Published Handlist: A list of the papers and correspondence of Karl Pearson (1857-1936) held in the Manuscripts Room, University College London Library compiled by M Merrington, B Blundell, S Burrough, J Golden, J Hogarth (University College London, 1983).
There is also a card index of correspondence available in the Special Collections reading room.