Copy letter from Robert William Frederick Harrison, to Professor A S Ashcroft 'Dear Sir, Soirée It would be very convenient if you could manage to call here next week to discuss a few matters in connection with your exhibit. You might enquire, if you will, for Mr James, who will arrange with you the necessary details. We close here at 6 p.m. daily. Faithfully yours R Harrison Asst. Sec. R.S. [Assistant Secretary Royal Society]'. 27 April 1907