Copy letter from an unknown correspondent, to Mr Collings, 172 Strand 'Herewith the 3 figs Pearson to be reproduced w on b [white on black] 15/- (Ph.Trs ['Philosophical Transactions of the Royal Society']). They seem to me rather rough, and unless you feel sure that it is unneccessary to do so, I should say you had better see Prof Karl Pearson at Univ [University] College, Gower Street, before getting them in hand'. 15 December 1893