Letters from Charles Howard Usher 6 Letters relate to enquiry on albinism in man and animals. Letters mainly to Karl Pearson and Edward Nettleship. Concern reprinting hare photographs (photographs enclosed), albino goldfinch feathers (specimen attached), hare skins, sending drawings of microscopical sections of birds eyes, thrush eye sections, press cutting from <i>The People</i> about a nest containing white blackbirds, (Mairi dhu) Pompek's pedigree, colour blindness, discussing dog litters and colouring. 1912