"Theory of Ancestral Contributions in Heredity," handwritten manuscript by Karl Pearson, published in Proceedings of the Royal Society (vol. 81:547)

1970. [handwritten notes] 34 [stamp, University College London Pearson Papers 198] Phil [underscore]The Theory of Ancestral Contributions in Heredity[end underscore] By Karl Pearson, F. R. S. [stamped]Royal Society Received, 10 Mar. 1909 [end]