| Description | Pearson's and C H Usher's annotated manuscripts (some unpublished) with pedigrees and corrections for Pearson, E Nettleship, C H Usher's Albinism in Man, parts I, II and IV published in Drapers Company Research Memoirs, Biometric Series vol 6, 8 and 9. Bib 170 and 201 (1911-1913). |