Copy letter from Robert William Frederick Harrison, to Roland Trimen, Fellow of the Royal Society, 5 Lancaster Street, Lancaster Gate, W. 'In reply to your card, the introduction of ladies as visitors to the weekly meetings is not recognised officially, but I understand that no obstacle is placed in the way of Fellows who personally introduce ladies. I am, Yours faithfully, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 23 March 1897