Manuscript "The Problem of Alien Immigration" by Karl Pearson and Margaret Moul Consists of : <li>manuscript "The Problem of Alien Immigration into Great Britain, illustrated by an examination of Russian and Polish Jewish Children" by Karl Pearson and Margaret Moul for <i>Annals of Eugenics</i>, Part III. (vii) Comments for the printer. (145pp)</li> <li>manuscript "Notes on lenticular astigmatism" (10pp)</li> 1926