Copy letter from Robert William Frederick Harrison to Miss May Allen, Zoology Department, The University, Liverpool 'Dear Madam, Referring to your memorandum of March 26th, I shall be glad if you will say whether the missing parts of the Proceedings [of the Royal Society], Series B, Nos. 520, 528, & 537, belong to Prof. Herdman's private set, as a Fellow, or to a set in the University Library.' 4 April 1909