Correspondence about Collecting Medical Data Letters from: A G Anderson, dated 8 Nov 1913, enclosing Pearson's letter and specimen of enquiry sheet for Tuberculosis Dispensary. Pearson's letter to Anderson, dated 28 Apr 1913, outlines his research questions. J H Hallam, 1913, inviting Pearson to deliver an evening lecture. Sir George Newman, 1913, seeking advice on collecting statistics. Maria Poole, dated 20 Dec 1909, concerning a book with particulars of heredity Loetitia Sharpe (Pearson's sister-in-law), dated 15 Dec 1909, regarding a book which she wanted returned to Miss Poole, and about notes from a report. 1909-1913